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Commit | Line | Data |
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fef3106c | 1 | ; Options for the C, ObjC, C++ and ObjC++ front ends. |
818ab71a | 2 | ; Copyright (C) 2003-2016 Free Software Foundation, Inc. |
fef3106c NB |
3 | ; |
4 | ; This file is part of GCC. | |
5 | ; | |
6 | ; GCC is free software; you can redistribute it and/or modify it under | |
7 | ; the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | ; Software Foundation; either version 3, or (at your option) any later |
fef3106c | 9 | ; version. |
c22cacf3 | 10 | ; |
fef3106c NB |
11 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | ; for more details. | |
c22cacf3 | 15 | ; |
fef3106c | 16 | ; You should have received a copy of the GNU General Public License |
9dcd6f09 NC |
17 | ; along with GCC; see the file COPYING3. If not see |
18 | ; <http://www.gnu.org/licenses/>. | |
fef3106c | 19 | |
8abb6b22 | 20 | ; See the GCC internals manual for a description of this file's format. |
fef3106c | 21 | |
fef3106c NB |
22 | ; Please try to keep this file in ASCII collating order. |
23 | ||
be43ab4e NB |
24 | Language |
25 | C | |
26 | ||
27 | Language | |
28 | ObjC | |
29 | ||
30 | Language | |
31 | C++ | |
32 | ||
33 | Language | |
34 | ObjC++ | |
35 | ||
e200444e JM |
36 | -all-warnings |
37 | C ObjC C++ ObjC++ Warning Alias(Wall) | |
38 | ||
39 | -ansi | |
40 | C ObjC C++ ObjC++ Alias(ansi) | |
41 | ||
42 | -assert | |
43 | C ObjC C++ ObjC++ Separate Alias(A) MissingArgError(assertion missing after %qs) | |
44 | ||
45 | -assert= | |
46 | C ObjC C++ ObjC++ Joined Alias(A) MissingArgError(assertion missing after %qs) | |
47 | ||
48 | -comments | |
49 | C ObjC C++ ObjC++ Alias(C) | |
50 | ||
51 | -comments-in-macros | |
52 | C ObjC C++ ObjC++ Alias(CC) | |
53 | ||
54 | -define-macro | |
55 | C ObjC C++ ObjC++ Separate Alias(D) MissingArgError(macro name missing after %qs) | |
56 | ||
57 | -define-macro= | |
58 | C ObjC C++ ObjC++ Joined Alias(D) MissingArgError(macro name missing after %qs) | |
59 | ||
60 | -dependencies | |
61 | C ObjC C++ ObjC++ Alias(M) | |
62 | ||
63 | -dump | |
64 | C ObjC C++ ObjC++ Separate Alias(d) | |
65 | ||
66 | -dump= | |
67 | C ObjC C++ ObjC++ Joined Alias(d) | |
68 | ||
69 | -imacros | |
70 | C ObjC C++ ObjC++ Separate Alias(imacros) MissingArgError(missing filename after %qs) | |
71 | ||
72 | -imacros= | |
73 | C ObjC C++ ObjC++ Joined Alias(imacros) MissingArgError(missing filename after %qs) | |
74 | ||
75 | -include | |
76 | C ObjC C++ ObjC++ Separate Alias(include) MissingArgError(missing filename after %qs) | |
77 | ||
78 | -include= | |
79 | C ObjC C++ ObjC++ Joined Alias(include) MissingArgError(missing filename after %qs) | |
80 | ||
81 | -include-barrier | |
82 | C ObjC C++ ObjC++ Alias(I, -) | |
83 | ||
84 | -include-directory | |
85 | C ObjC C++ ObjC++ Separate Alias(I) MissingArgError(missing path after %qs) | |
86 | ||
87 | -include-directory= | |
88 | C ObjC C++ ObjC++ Joined Alias(I) MissingArgError(missing path after %qs) | |
89 | ||
90 | -include-directory-after | |
91 | C ObjC C++ ObjC++ Separate Alias(idirafter) MissingArgError(missing path after %qs) | |
92 | ||
93 | -include-directory-after= | |
94 | C ObjC C++ ObjC++ Joined Alias(idirafter) MissingArgError(missing path after %qs) | |
95 | ||
96 | -include-prefix | |
97 | C ObjC C++ ObjC++ Separate Alias(iprefix) | |
98 | ||
99 | -include-prefix= | |
100 | C ObjC C++ ObjC++ JoinedOrMissing Alias(iprefix) | |
101 | ||
102 | -include-with-prefix | |
103 | C ObjC C++ ObjC++ Separate Alias(iwithprefix) | |
104 | ||
105 | -include-with-prefix= | |
106 | C ObjC C++ ObjC++ JoinedOrMissing Alias(iwithprefix) | |
107 | ||
108 | -include-with-prefix-after | |
109 | C ObjC C++ ObjC++ Separate Alias(iwithprefix) | |
110 | ||
111 | -include-with-prefix-after= | |
112 | C ObjC C++ ObjC++ JoinedOrMissing Alias(iwithprefix) | |
113 | ||
114 | -include-with-prefix-before | |
115 | C ObjC C++ ObjC++ Separate Alias(iwithprefixbefore) | |
116 | ||
117 | -include-with-prefix-before= | |
118 | C ObjC C++ ObjC++ JoinedOrMissing Alias(iwithprefixbefore) | |
119 | ||
120 | -no-integrated-cpp | |
121 | Driver Alias(no-integrated-cpp) | |
122 | ||
123 | -no-line-commands | |
124 | C ObjC C++ ObjC++ Alias(P) | |
125 | ||
126 | -no-standard-includes | |
127 | C ObjC C++ ObjC++ Alias(nostdinc) | |
128 | ||
129 | -no-warnings | |
130 | C ObjC C++ ObjC++ Alias(w) | |
131 | ||
132 | -output | |
133 | C ObjC C++ ObjC++ Separate Alias(o) | |
134 | ||
135 | -output= | |
136 | C ObjC C++ ObjC++ Joined Alias(o) | |
137 | ||
fef3106c NB |
138 | -output-pch= |
139 | C ObjC C++ ObjC++ Joined Separate | |
140 | ||
e200444e JM |
141 | -pedantic |
142 | C ObjC C++ ObjC++ Alias(pedantic) | |
143 | ||
e200444e JM |
144 | -preprocess |
145 | C ObjC C++ ObjC++ Undocumented Alias(E) | |
146 | ||
147 | -print-missing-file-dependencies | |
148 | C ObjC C++ ObjC++ Alias(MG) | |
149 | ||
150 | -trace-includes | |
151 | C ObjC C++ ObjC++ Alias(H) | |
152 | ||
153 | -traditional | |
154 | Driver Alias(traditional) | |
155 | ||
156 | -traditional-cpp | |
157 | C ObjC C++ ObjC++ Alias(traditional-cpp) | |
158 | ||
159 | -trigraphs | |
160 | C ObjC C++ ObjC++ Alias(trigraphs) | |
161 | ||
162 | -undefine-macro | |
163 | C ObjC C++ ObjC++ Separate Alias(U) MissingArgError(macro name missing after %qs) | |
164 | ||
165 | -undefine-macro= | |
166 | C ObjC C++ ObjC++ Joined Alias(U) MissingArgError(macro name missing after %qs) | |
167 | ||
168 | -user-dependencies | |
169 | C ObjC C++ ObjC++ Alias(MM) | |
170 | ||
171 | -verbose | |
172 | Common C ObjC C++ ObjC++ Alias(v) | |
173 | ||
174 | -write-dependencies | |
175 | C ObjC C++ ObjC++ NoDriverArg Separate Alias(MD) MissingArgError(missing filename after %qs) | |
176 | ||
177 | -write-user-dependencies | |
178 | C ObjC C++ ObjC++ NoDriverArg Separate Alias(MMD) MissingArgError(missing filename after %qs) | |
179 | ||
fef3106c | 180 | A |
61ff2bdc | 181 | C ObjC C++ ObjC++ Joined Separate MissingArgError(assertion missing after %qs) |
a7b2e184 | 182 | -A<question>=<answer> Assert the <answer> to <question>. Putting '-' before <question> disables the <answer> to <question>. |
fef3106c NB |
183 | |
184 | C | |
185 | C ObjC C++ ObjC++ | |
a7b2e184 | 186 | Do not discard comments. |
fef3106c NB |
187 | |
188 | CC | |
189 | C ObjC C++ ObjC++ | |
a7b2e184 | 190 | Do not discard comments in macro expansions. |
fef3106c NB |
191 | |
192 | D | |
61ff2bdc | 193 | C ObjC C++ ObjC++ Joined Separate MissingArgError(macro name missing after %qs) |
a7b2e184 | 194 | -D<macro>[=<val>] Define a <macro> with <val> as its value. If just <macro> is given, <val> is taken to be 1. |
fef3106c NB |
195 | |
196 | E | |
5498f011 | 197 | C ObjC C++ ObjC++ Undocumented Var(flag_preprocess_only) |
fef3106c | 198 | |
94d1613b | 199 | F |
bd837408 | 200 | Driver C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 201 | -F <dir> Add <dir> to the end of the main framework include path. |
94d1613b | 202 | |
fef3106c NB |
203 | H |
204 | C ObjC C++ ObjC++ | |
a7b2e184 | 205 | Print the name of header files as they are used. |
fef3106c NB |
206 | |
207 | I | |
61ff2bdc | 208 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 209 | -I <dir> Add <dir> to the end of the main include path. |
fef3106c NB |
210 | |
211 | M | |
212 | C ObjC C++ ObjC++ | |
a7b2e184 | 213 | Generate make dependencies. |
fef3106c | 214 | |
c878765b JM |
215 | MD |
216 | C ObjC C++ ObjC++ NoDriverArg Separate MissingArgError(missing filename after %qs) | |
a7b2e184 | 217 | Generate make dependencies and compile. |
fef3106c NB |
218 | |
219 | MF | |
61ff2bdc | 220 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing filename after %qs) |
a7b2e184 | 221 | -MF <file> Write dependency output to the given file. |
fef3106c NB |
222 | |
223 | MG | |
224 | C ObjC C++ ObjC++ | |
a7b2e184 | 225 | Treat missing header files as generated files. |
fef3106c NB |
226 | |
227 | MM | |
228 | C ObjC C++ ObjC++ | |
a7b2e184 | 229 | Like -M but ignore system header files. |
fef3106c | 230 | |
c878765b JM |
231 | MMD |
232 | C ObjC C++ ObjC++ NoDriverArg Separate MissingArgError(missing filename after %qs) | |
a7b2e184 | 233 | Like -MD but ignore system header files. |
fef3106c NB |
234 | |
235 | MP | |
236 | C ObjC C++ ObjC++ | |
a7b2e184 | 237 | Generate phony targets for all headers. |
fef3106c NB |
238 | |
239 | MQ | |
61ff2bdc | 240 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing makefile target after %qs) |
a7b2e184 | 241 | -MQ <target> Add a MAKE-quoted target. |
fef3106c NB |
242 | |
243 | MT | |
61ff2bdc | 244 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing makefile target after %qs) |
a7b2e184 | 245 | -MT <target> Add an unquoted target. |
fef3106c NB |
246 | |
247 | P | |
248 | C ObjC C++ ObjC++ | |
a7b2e184 | 249 | Do not generate #line directives. |
fef3106c NB |
250 | |
251 | U | |
61ff2bdc | 252 | C ObjC C++ ObjC++ Joined Separate MissingArgError(macro name missing after %qs) |
a7b2e184 | 253 | -U<macro> Undefine <macro>. |
fef3106c NB |
254 | |
255 | Wabi | |
d7f09764 | 256 | C ObjC C++ ObjC++ LTO Var(warn_abi) Warning |
a7b2e184 | 257 | Warn about things that will change when compiling with an ABI-compliant compiler. |
fef3106c | 258 | |
62984918 JM |
259 | Wabi= |
260 | C ObjC C++ ObjC++ LTO Joined RejectNegative UInteger Warning | |
a7b2e184 | 261 | Warn about things that change between the current -fabi-version and the specified version. |
62984918 | 262 | |
7dbb85a7 JM |
263 | Wabi-tag |
264 | C++ ObjC++ Var(warn_abi_tag) Warning | |
a7b2e184 | 265 | Warn if a subobject has an abi_tag attribute that the complete object type does not have. |
7dbb85a7 | 266 | |
bce08d50 | 267 | Wpsabi |
50b15873 | 268 | C ObjC C++ ObjC++ LTO Var(warn_psabi) Init(1) Warning Undocumented LangEnabledBy(C ObjC C++ ObjC++,Wabi) |
bce08d50 | 269 | |
c116cd05 | 270 | Waddress |
4a0ae68e | 271 | C ObjC C++ ObjC++ Var(warn_address) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 272 | Warn about suspicious uses of memory addresses. |
c116cd05 | 273 | |
af63ba4b JM |
274 | Enum |
275 | Name(warn_aligned_new_level) Type(int) UnknownError(argument %qs to %<-Waligned-new%> not recognized) | |
276 | ||
277 | EnumValue | |
278 | Enum(warn_aligned_new_level) String(none) Value(0) | |
279 | ||
280 | EnumValue | |
281 | Enum(warn_aligned_new_level) String(global) Value(1) | |
282 | ||
283 | EnumValue | |
284 | Enum(warn_aligned_new_level) String(all) Value(2) | |
285 | ||
286 | Waligned-new | |
287 | C++ ObjC++ Alias(Waligned-new=,global,none) | |
288 | Warn about 'new' of type with extended alignment without -faligned-new. | |
289 | ||
290 | Waligned-new= | |
2e1c20b1 | 291 | C++ ObjC++ Var(warn_aligned_new) Enum(warn_aligned_new_level) Joined RejectNegative Warning LangEnabledBy(C++ ObjC++,Wall,1,0) |
af63ba4b JM |
292 | -Waligned-new=all Warn even if 'new' uses a class member allocation function. |
293 | ||
fef3106c | 294 | Wall |
c662432e | 295 | C ObjC C++ ObjC++ Warning |
a7b2e184 | 296 | Enable most warning messages. |
fef3106c | 297 | |
adc577c5 AH |
298 | Walloca |
299 | C ObjC C++ ObjC++ Var(warn_alloca) Warning | |
300 | Warn on any use of alloca. | |
301 | ||
302 | Walloca-larger-than= | |
303 | C ObjC C++ ObjC++ Var(warn_alloca_limit) Warning Joined RejectNegative UInteger | |
304 | -Walloca-larger-than=<number> Warn on unbounded uses of | |
305 | alloca, and on bounded uses of alloca whose bound can be larger than | |
306 | <number> bytes. | |
307 | ||
34a180a6 MLI |
308 | Warray-bounds |
309 | LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
310 | ; in common.opt | |
311 | ||
de1b5c17 MU |
312 | Warray-bounds= |
313 | LangEnabledBy(C ObjC C++ ObjC++,Wall,1,0) | |
314 | ; in common.opt | |
315 | ||
6e955430 | 316 | Wassign-intercept |
c662432e | 317 | ObjC ObjC++ Var(warn_assign_intercept) Warning |
a7b2e184 | 318 | Warn whenever an Objective-C assignment is being intercepted by the garbage collector. |
6e955430 | 319 | |
fef3106c | 320 | Wbad-function-cast |
c662432e | 321 | C ObjC Var(warn_bad_function_cast) Warning |
a7b2e184 | 322 | Warn about casting functions to incompatible types. |
fef3106c | 323 | |
04159acf MP |
324 | Wbool-compare |
325 | C ObjC C++ ObjC++ Var(warn_bool_compare) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 326 | Warn about boolean expression compared with an integer value different from true/false. |
04159acf | 327 | |
9a2300e9 MP |
328 | Wbool-operation |
329 | C ObjC C++ ObjC++ Var(warn_bool_op) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
330 | Warn about certain operations on boolean expressions. | |
331 | ||
8423e57c MS |
332 | Wframe-address |
333 | C ObjC C++ ObjC++ Var(warn_frame_address) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 334 | Warn when __builtin_frame_address or __builtin_return_address is used unsafely. |
8423e57c | 335 | |
c047ce93 | 336 | Wbuiltin-macro-redefined |
b559c810 | 337 | C ObjC C++ ObjC++ CPP(warn_builtin_macro_redefined) CppReason(CPP_W_BUILTIN_MACRO_REDEFINED) Var(cpp_warn_builtin_macro_redefined) Init(1) Warning |
a7b2e184 | 338 | Warn when a built-in preprocessor macro is undefined or redefined. |
c047ce93 | 339 | |
f3bede71 | 340 | Wc90-c99-compat |
b559c810 | 341 | C ObjC CPP(cpp_warn_c90_c99_compat) CppReason(CPP_W_C90_C99_COMPAT) Var(warn_c90_c99_compat) Init(-1) Warning |
a7b2e184 | 342 | Warn about features not present in ISO C90, but present in ISO C99. |
f3bede71 | 343 | |
35aff4fb MP |
344 | Wc99-c11-compat |
345 | C ObjC Var(warn_c99_c11_compat) Init(-1) Warning | |
a7b2e184 | 346 | Warn about features not present in ISO C99, but present in ISO C11. |
35aff4fb | 347 | |
b7e20b53 | 348 | Wc++-compat |
b559c810 | 349 | C ObjC Var(warn_cxx_compat) CPP(warn_cxx_operator_names) CppReason(CPP_W_CXX_OPERATOR_NAMES) Init(0) Warning |
a7b2e184 | 350 | Warn about C constructs that are not in the common subset of C and C++. |
b7e20b53 | 351 | |
e1f1ee86 | 352 | Wc++0x-compat |
765189ff | 353 | C++ ObjC++ Warning Alias(Wc++11-compat) Undocumented |
97e3ad20 JM |
354 | |
355 | Wc++11-compat | |
765189ff | 356 | C++ ObjC++ Var(warn_cxx11_compat) Warning LangEnabledBy(C++ ObjC++,Wall) Init(0) CPP(cpp_warn_cxx11_compat) CppReason(CPP_W_CXX11_COMPAT) |
a7b2e184 | 357 | Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011. |
b7e20b53 | 358 | |
20b06add JM |
359 | Wc++14-compat |
360 | C++ ObjC++ Var(warn_cxx14_compat) Warning LangEnabledBy(C++ ObjC++,Wall) | |
a7b2e184 | 361 | Warn about C++ constructs whose meaning differs between ISO C++ 2011 and ISO C++ 2014. |
20b06add | 362 | |
fef3106c | 363 | Wcast-qual |
c662432e | 364 | C ObjC C++ ObjC++ Var(warn_cast_qual) Warning |
a7b2e184 | 365 | Warn about casts which discard qualifiers. |
fef3106c NB |
366 | |
367 | Wchar-subscripts | |
4a0ae68e | 368 | C ObjC C++ ObjC++ Var(warn_char_subscripts) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 369 | Warn about subscripts whose type is \"char\". |
fef3106c | 370 | |
d5e254e1 | 371 | Wchkp |
c2d89095 | 372 | C ObjC C++ ObjC++ Var(warn_chkp) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 373 | Warn about memory access errors found by Pointer Bounds Checker. |
d5e254e1 | 374 | |
2b001724 | 375 | Wclobbered |
95744782 | 376 | C ObjC C++ ObjC++ Var(warn_clobbered) Warning EnabledBy(Wextra) |
a7b2e184 | 377 | Warn about variables that might be changed by \"longjmp\" or \"vfork\". |
2b001724 | 378 | |
fef3106c | 379 | Wcomment |
b559c810 | 380 | C ObjC C++ ObjC++ CPP(warn_comments) CppReason(CPP_W_COMMENTS) Var(cpp_warn_comment) Init(0) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 381 | Warn about possibly nested block comments, and C++ comments spanning more than one physical line. |
fef3106c NB |
382 | |
383 | Wcomments | |
5de8299c | 384 | C ObjC C++ ObjC++ Warning Alias(Wcomment) |
a7b2e184 | 385 | Synonym for -Wcomment. |
fef3106c | 386 | |
dfeadaa0 PC |
387 | Wconditionally-supported |
388 | C++ ObjC++ Var(warn_conditionally_supported) Warning | |
a7b2e184 | 389 | Warn for conditionally-supported constructs. |
dfeadaa0 | 390 | |
fef3106c | 391 | Wconversion |
c662432e | 392 | C ObjC C++ ObjC++ Var(warn_conversion) Warning |
a7b2e184 | 393 | Warn for implicit type conversions that may change a value. |
fef3106c | 394 | |
17251338 MLI |
395 | Wconversion-null |
396 | C++ ObjC++ Var(warn_conversion_null) Init(1) Warning | |
a7b2e184 | 397 | Warn for converting NULL from/to a non-pointer type. |
17251338 | 398 | |
b559c810 MLI |
399 | Wcpp |
400 | C ObjC C++ ObjC++ CppReason(CPP_W_WARNING_DIRECTIVE) | |
401 | ; Documented in common.opt | |
402 | ||
fef3106c | 403 | Wctor-dtor-privacy |
c662432e | 404 | C++ ObjC++ Var(warn_ctor_dtor_privacy) Warning |
a7b2e184 | 405 | Warn when all constructors and destructors are private. |
deef7113 MP |
406 | |
407 | Wdangling-else | |
408 | C ObjC C++ ObjC++ Var(warn_dangling_else) Warning LangEnabledBy(C ObjC C++ ObjC++,Wparentheses) | |
409 | Warn about dangling else. | |
fef3106c | 410 | |
b559c810 MLI |
411 | Wdate-time |
412 | C ObjC C++ ObjC++ CPP(warn_date_time) CppReason(CPP_W_DATE_TIME) Var(cpp_warn_date_time) Init(0) Warning | |
a7b2e184 | 413 | Warn about __TIME__, __DATE__ and __TIMESTAMP__ usage. |
b559c810 | 414 | |
85617eba | 415 | Wdeclaration-after-statement |
177cce46 | 416 | C ObjC Var(warn_declaration_after_statement) Init(-1) Warning |
a7b2e184 | 417 | Warn when a declaration is found after a statement. |
85617eba | 418 | |
c9b0866a PC |
419 | Wdelete-incomplete |
420 | C++ ObjC++ Var(warn_delete_incomplete) Init(1) Warning | |
a7b2e184 | 421 | Warn when deleting a pointer to incomplete type. |
c9b0866a | 422 | |
014ab419 | 423 | Wdelete-non-virtual-dtor |
27e51192 | 424 | C++ ObjC++ Var(warn_delnonvdtor) Warning LangEnabledBy(C++ ObjC++,Wall || Weffc++) |
a7b2e184 | 425 | Warn about deleting polymorphic objects with non-virtual destructors. |
014ab419 | 426 | |
fef3106c | 427 | Wdeprecated |
b559c810 | 428 | C C++ ObjC ObjC++ CPP(cpp_warn_deprecated) CppReason(CPP_W_DEPRECATED) Var(warn_deprecated) Init(1) Warning |
a7b2e184 | 429 | Warn if a deprecated compiler feature, class, method, or field is used. |
fef3106c | 430 | |
976d5a22 TT |
431 | Wdesignated-init |
432 | C ObjC Var(warn_designated_init) Init(1) Warning | |
a7b2e184 | 433 | Warn about positional initialization of structs requiring designated initializers. |
976d5a22 | 434 | |
768952be MU |
435 | Wdiscarded-array-qualifiers |
436 | C ObjC Var(warn_discarded_array_qualifiers) Init(1) Warning | |
a7b2e184 | 437 | Warn if qualifiers on arrays which are pointer targets are discarded. |
768952be | 438 | |
d00887e8 MP |
439 | Wdiscarded-qualifiers |
440 | C ObjC Var(warn_discarded_qualifiers) Init(1) Warning | |
a7b2e184 | 441 | Warn if type qualifiers on pointers are discarded. |
d00887e8 | 442 | |
fef3106c | 443 | Wdiv-by-zero |
2cbac420 | 444 | C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warning |
a7b2e184 | 445 | Warn about compile-time integer division by zero. |
fef3106c | 446 | |
3e3b8d63 | 447 | Wduplicated-cond |
12651878 | 448 | C ObjC C++ ObjC++ Var(warn_duplicated_cond) Init(0) Warning |
a7b2e184 | 449 | Warn about duplicated conditions in an if-else-if chain. |
3e3b8d63 | 450 | |
fef3106c | 451 | Weffc++ |
c662432e | 452 | C++ ObjC++ Var(warn_ecpp) Warning |
a7b2e184 | 453 | Warn about violations of Effective C++ style rules. |
fef3106c | 454 | |
b3b433c5 | 455 | Wempty-body |
95744782 | 456 | C ObjC C++ ObjC++ Var(warn_empty_body) Warning EnabledBy(Wextra) |
a7b2e184 | 457 | Warn about an empty body in an if or else statement. |
b3b433c5 | 458 | |
fef3106c | 459 | Wendif-labels |
b559c810 | 460 | C ObjC C++ ObjC++ CPP(warn_endif_labels) CppReason(CPP_W_ENDIF_LABELS) Var(cpp_warn_endif_labels) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic) |
a7b2e184 | 461 | Warn about stray tokens after #elif and #endif. |
fef3106c | 462 | |
a3299096 | 463 | Wenum-compare |
27e51192 | 464 | C ObjC C++ ObjC++ Var(warn_enum_compare) Init(-1) Warning LangEnabledBy(C ObjC,Wall || Wc++-compat) |
a7b2e184 | 465 | Warn about comparison of different enum types. |
a3299096 | 466 | |
fef3106c NB |
467 | Werror |
468 | C ObjC C++ ObjC++ | |
72de27ea | 469 | ; Documented in common.opt |
fef3106c NB |
470 | |
471 | Werror-implicit-function-declaration | |
5de8299c | 472 | C ObjC RejectNegative Warning Alias(Werror=, implicit-function-declaration) |
a7b2e184 | 473 | This switch is deprecated; use -Werror=implicit-function-declaration instead. |
fef3106c | 474 | |
70f6d5e1 JJ |
475 | Wextra |
476 | C ObjC C++ ObjC++ Warning | |
477 | ; in common.opt | |
478 | ||
49b0aa18 | 479 | Wfloat-conversion |
63bbf46d | 480 | C ObjC C++ ObjC++ Var(warn_float_conversion) Warning LangEnabledBy(C ObjC C++ ObjC++,Wconversion) |
a7b2e184 | 481 | Warn for implicit type conversions that cause loss of floating point precision. |
49b0aa18 | 482 | |
fef3106c | 483 | Wfloat-equal |
c662432e | 484 | C ObjC C++ ObjC++ Var(warn_float_equal) Warning |
a7b2e184 | 485 | Warn if testing floating point numbers for equality. |
fef3106c NB |
486 | |
487 | Wformat | |
7332899a | 488 | C ObjC C++ ObjC++ Warning Alias(Wformat=, 1, 0) |
a7b2e184 | 489 | Warn about printf/scanf/strftime/strfmon format string anomalies. |
fef3106c | 490 | |
7332899a MLI |
491 | Wformat-contains-nul |
492 | C ObjC C++ ObjC++ Var(warn_format_contains_nul) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0) | |
a7b2e184 | 493 | Warn about format strings that contain NUL bytes. |
7332899a | 494 | |
fef3106c | 495 | Wformat-extra-args |
7332899a | 496 | C ObjC C++ ObjC++ Var(warn_format_extra_args) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0) |
a7b2e184 | 497 | Warn if passing too many arguments to a function for its format string. |
fef3106c | 498 | |
88d0c3f0 MS |
499 | Wformat-length |
500 | C ObjC C++ ObjC++ Warning Alias(Wformat-length=, 1, 0) | |
501 | Warn about function calls with format strings that write past the end | |
502 | of the destination region. Same as -Wformat-length=1. | |
503 | ||
fef3106c | 504 | Wformat-nonliteral |
7332899a | 505 | C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0) |
a7b2e184 | 506 | Warn about format strings that are not literals. |
fef3106c NB |
507 | |
508 | Wformat-security | |
7332899a | 509 | C ObjC C++ ObjC++ Var(warn_format_security) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0) |
a7b2e184 | 510 | Warn about possible security problems with format functions. |
fef3106c | 511 | |
cbbd2b1c | 512 | Wformat-signedness |
7631f0e2 | 513 | C ObjC C++ ObjC++ Var(warn_format_signedness) Warning |
a7b2e184 | 514 | Warn about sign differences with format functions. |
cbbd2b1c | 515 | |
fef3106c | 516 | Wformat-y2k |
7332899a | 517 | C ObjC C++ ObjC++ Var(warn_format_y2k) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 2, 0) |
a7b2e184 | 518 | Warn about strftime formats yielding 2-digit years. |
fef3106c NB |
519 | |
520 | Wformat-zero-length | |
7332899a | 521 | C ObjC C++ ObjC++ Var(warn_format_zero_length) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 1, 0) |
a7b2e184 | 522 | Warn about zero-length formats. |
fef3106c NB |
523 | |
524 | Wformat= | |
7332899a | 525 | C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0) |
a7b2e184 | 526 | Warn about printf/scanf/strftime/strfmon format string anomalies. |
fef3106c | 527 | |
88d0c3f0 MS |
528 | Wformat-length= |
529 | C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format_length) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0) | |
530 | Warn about function calls with format strings that write past the end | |
531 | of the destination region. | |
532 | ||
5db2e9ca | 533 | Wignored-qualifiers |
95744782 | 534 | C C++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra) |
5db2e9ca DK |
535 | Warn whenever type qualifiers are ignored. |
536 | ||
fbdb6baf MP |
537 | Wignored-attributes |
538 | C C++ Var(warn_ignored_attributes) Init(1) Warning | |
539 | Warn whenever attributes are ignored. | |
540 | ||
d5c3d343 MP |
541 | Wincompatible-pointer-types |
542 | C ObjC Var(warn_incompatible_pointer_types) Init(1) Warning | |
a7b2e184 | 543 | Warn when there is a conversion between pointers that have incompatible types. |
d5c3d343 | 544 | |
3390f9c9 | 545 | Winit-self |
0ccb505d | 546 | C ObjC C++ ObjC++ Var(warn_init_self) Warning LangEnabledBy(C++ ObjC++,Wall) |
a7b2e184 | 547 | Warn about variables which are initialized to themselves. |
3390f9c9 | 548 | |
fef3106c | 549 | Wimplicit |
4a0ae68e | 550 | C ObjC Var(warn_implicit) Warning LangEnabledBy(C ObjC,Wall) |
a7b2e184 | 551 | Warn about implicit declarations. |
fef3106c | 552 | |
70f6d5e1 JJ |
553 | Wimplicit-fallthrough= |
554 | LangEnabledBy(C ObjC C++ ObjC++,Wextra,3,0) | |
555 | ; in common.opt | |
556 | ||
0a0b3574 MM |
557 | Wdouble-promotion |
558 | C ObjC C++ ObjC++ Var(warn_double_promotion) Warning | |
a7b2e184 | 559 | Warn about implicit conversions from \"float\" to \"double\". |
0a0b3574 | 560 | |
fef3106c | 561 | Wimplicit-function-declaration |
4a0ae68e | 562 | C ObjC Var(warn_implicit_function_declaration) Init(-1) Warning LangEnabledBy(C ObjC,Wimplicit) |
a7b2e184 | 563 | Warn about implicit function declarations. |
fef3106c NB |
564 | |
565 | Wimplicit-int | |
92574c7c | 566 | C ObjC Var(warn_implicit_int) Init(-1) Warning LangEnabledBy(C ObjC,Wimplicit) |
a7b2e184 | 567 | Warn when a declaration does not specify a type. |
fef3106c NB |
568 | |
569 | Wimport | |
2d2bd949 | 570 | C ObjC C++ ObjC++ Undocumented Ignore |
fef3106c | 571 | |
4514a96b JM |
572 | Winherited-variadic-ctor |
573 | C++ ObjC++ Var(warn_inh_var_ctor) Init(1) Warning | |
a7b2e184 | 574 | Warn about C++11 inheriting constructors when the base has a variadic constructor. |
4514a96b | 575 | |
52ec0ea3 MP |
576 | Wint-conversion |
577 | C ObjC Var(warn_int_conversion) Init(1) Warning | |
a7b2e184 | 578 | Warn about incompatible integer to pointer and pointer to integer conversions. |
52ec0ea3 | 579 | |
144a96e4 BE |
580 | Wint-in-bool-context |
581 | C ObjC C++ ObjC++ Var(warn_int_in_bool_context) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
582 | Warn for suspicious integer expressions in boolean context. | |
583 | ||
53a2494e | 584 | Wint-to-pointer-cast |
dc8d2739 | 585 | C ObjC C++ ObjC++ Var(warn_int_to_pointer_cast) Init(1) Warning |
a7b2e184 | 586 | Warn when there is a cast to a pointer from an integer of a different size. |
53a2494e | 587 | |
fef3106c | 588 | Winvalid-offsetof |
c662432e | 589 | C++ ObjC++ Var(warn_invalid_offsetof) Init(1) Warning |
a7b2e184 | 590 | Warn about invalid uses of the \"offsetof\" macro. |
fef3106c NB |
591 | |
592 | Winvalid-pch | |
b559c810 | 593 | C ObjC C++ ObjC++ CPP(warn_invalid_pch) CppReason(CPP_W_INVALID_PCH) Var(cpp_warn_invalid_pch) Init(0) Warning |
a7b2e184 | 594 | Warn about PCH files that are found but not used. |
fef3106c | 595 | |
e1b7793c | 596 | Wjump-misses-init |
f2bc201f | 597 | C ObjC Var(warn_jump_misses_init) Warning LangEnabledby(C ObjC,Wc++-compat) |
a7b2e184 | 598 | Warn when a jump misses a variable initialization. |
e1b7793c | 599 | |
7f5f5f98 | 600 | Wliteral-suffix |
b559c810 | 601 | C++ ObjC++ CPP(warn_literal_suffix) CppReason(CPP_W_LITERAL_SUFFIX) Var(cpp_warn_literal_suffix) Init(1) Warning |
7f5f5f98 OW |
602 | Warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore. |
603 | ||
ca409efd | 604 | Wlogical-op |
a7b2e184 MS |
605 | C ObjC C++ ObjC++ Var(warn_logical_op) Init(0) Warning |
606 | Warn when a logical operator is suspiciously always evaluating to true or false. | |
ca409efd | 607 | |
742938c9 | 608 | Wlogical-not-parentheses |
d2e4feca | 609 | C ObjC C++ ObjC++ Var(warn_logical_not_paren) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 610 | Warn when logical not is used on the left hand side operand of a comparison. |
742938c9 | 611 | |
fef3106c | 612 | Wlong-long |
b559c810 | 613 | C ObjC C++ ObjC++ CPP(cpp_warn_long_long) CppReason(CPP_W_LONG_LONG) Var(warn_long_long) Init(-1) Warning LangEnabledBy(C ObjC,Wc90-c99-compat) |
a7b2e184 | 614 | Do not warn about using \"long long\" when -pedantic. |
fef3106c NB |
615 | |
616 | Wmain | |
34a180a6 | 617 | C ObjC C++ ObjC++ Var(warn_main) Init(-1) Warning LangEnabledBy(C ObjC,Wall, 2, 0) |
a7b2e184 | 618 | Warn about suspicious declarations of \"main\". |
fef3106c | 619 | |
34a180a6 MLI |
620 | Wmain |
621 | LangEnabledBy(C ObjC C++ ObjC++,Wpedantic, 2, 0) | |
622 | ; | |
623 | ||
b108f48f JJ |
624 | Wmemset-transposed-args |
625 | C ObjC C++ ObjC++ Var(warn_memset_transposed_args) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 626 | Warn about suspicious calls to memset where the third argument is constant literal zero and the second is not. |
b108f48f | 627 | |
c1e1f433 BS |
628 | Wmemset-elt-size |
629 | C ObjC C++ ObjC++ Var(warn_memset_elt_size) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
630 | Warn about suspicious calls to memset where the third argument contains the number of elements not multiplied by the element size. | |
631 | ||
c3388e62 | 632 | Wmisleading-indentation |
f6069ccc | 633 | C C++ Common Var(warn_misleading_indentation) Warning LangEnabledBy(C C++,Wall) |
a7b2e184 | 634 | Warn when the indentation of the code does not reflect the block structure. |
c3388e62 | 635 | |
fef3106c | 636 | Wmissing-braces |
4f7f7aca | 637 | C ObjC C++ ObjC++ Var(warn_missing_braces) Warning LangEnabledBy(C ObjC,Wall) |
a7b2e184 | 638 | Warn about possibly missing braces around initializers. |
fef3106c NB |
639 | |
640 | Wmissing-declarations | |
c662432e | 641 | C ObjC C++ ObjC++ Var(warn_missing_declarations) Warning |
a7b2e184 | 642 | Warn about global functions without previous declarations. |
fef3106c | 643 | |
eaac4679 | 644 | Wmissing-field-initializers |
95744782 | 645 | C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Warning EnabledBy(Wextra) |
a7b2e184 | 646 | Warn about missing fields in struct initializers. |
eaac4679 | 647 | |
6b333269 NS |
648 | Wmultiple-inheritance |
649 | C++ ObjC++ Var(warn_multiple_inheritance) Warning | |
a7b2e184 | 650 | Warn on direct multiple inheritance. |
6b333269 NS |
651 | |
652 | Wnamespaces | |
653 | C++ ObjC++ Var(warn_namespaces) Warning | |
a7b2e184 | 654 | Warn on namespace definition. |
6b333269 | 655 | |
20b06add JM |
656 | Wsized-deallocation |
657 | C++ ObjC++ Var(warn_sized_deallocation) Warning EnabledBy(Wextra) | |
a7b2e184 | 658 | Warn about missing sized deallocation functions. |
20b06add | 659 | |
1a4049e7 | 660 | Wsizeof-pointer-memaccess |
4a0ae68e | 661 | C ObjC C++ ObjC++ Var(warn_sizeof_pointer_memaccess) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 662 | Warn about suspicious length parameters to certain string functions if the argument uses sizeof. |
1a4049e7 | 663 | |
773ec47f MP |
664 | Wsizeof-array-argument |
665 | C ObjC C++ ObjC++ Var(warn_sizeof_array_argument) Warning Init(1) | |
a7b2e184 | 666 | Warn when sizeof is applied on a parameter declared as an array. |
773ec47f | 667 | |
90137d8f MLI |
668 | Wsuggest-attribute=format |
669 | C ObjC C++ ObjC++ Var(warn_suggest_attribute_format) Warning | |
a7b2e184 | 670 | Warn about functions which might be candidates for format attributes. |
fef3106c | 671 | |
2f42e5de TS |
672 | Wsuggest-override |
673 | C++ ObjC++ Var(warn_override) Warning | |
674 | Suggest that the override keyword be used when the declaration of a virtual | |
675 | function overrides another. | |
676 | ||
34a180a6 MLI |
677 | Wswitch |
678 | C ObjC C++ ObjC++ Var(warn_switch) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 679 | Warn about enumerated switches, with no default, missing a case. |
34a180a6 MLI |
680 | |
681 | Wswitch-default | |
682 | C ObjC C++ ObjC++ Var(warn_switch_default) Warning | |
a7b2e184 | 683 | Warn about enumerated switches missing a \"default:\" statement. |
34a180a6 MLI |
684 | |
685 | Wswitch-enum | |
686 | C ObjC C++ ObjC++ Var(warn_switch_enum) Warning | |
a7b2e184 | 687 | Warn about all enumerated switches missing a specific case. |
34a180a6 | 688 | |
fedfecef | 689 | Wswitch-bool |
5c3d09f7 | 690 | C ObjC C++ ObjC++ Var(warn_switch_bool) Warning Init(1) |
a7b2e184 | 691 | Warn about switches with boolean controlling expression. |
fedfecef | 692 | |
6b333269 NS |
693 | Wtemplates |
694 | C++ ObjC++ Var(warn_templates) Warning | |
a7b2e184 | 695 | Warn on primary template declaration. |
6b333269 | 696 | |
90137d8f | 697 | Wmissing-format-attribute |
54d62f51 | 698 | C ObjC C++ ObjC++ Warning Alias(Wsuggest-attribute=format) |
90137d8f MLI |
699 | ; |
700 | ||
b02398bd | 701 | Wmissing-include-dirs |
b559c810 | 702 | C ObjC C++ ObjC++ CPP(warn_missing_include_dirs) CppReason(CPP_W_MISSING_INCLUDE_DIRS) Var(cpp_warn_missing_include_dirs) Init(0) Warning |
a7b2e184 | 703 | Warn about user-specified include directories that do not exist. |
b02398bd | 704 | |
cb4af25a | 705 | Wmissing-parameter-type |
95744782 | 706 | C ObjC Var(warn_missing_parameter_type) Warning EnabledBy(Wextra) |
a7b2e184 | 707 | Warn about function parameters declared without a type specifier in K&R-style functions. |
cb4af25a | 708 | |
fef3106c | 709 | Wmissing-prototypes |
c662432e | 710 | C ObjC Var(warn_missing_prototypes) Warning |
a7b2e184 | 711 | Warn about global functions without prototypes. |
fef3106c | 712 | |
5720c0dc | 713 | Wmudflap |
98906124 | 714 | C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
5720c0dc | 715 | |
fef3106c | 716 | Wmultichar |
b559c810 | 717 | C ObjC C++ ObjC++ CPP(warn_multichar) CppReason(CPP_W_MULTICHAR) Var(cpp_warn_multichar) Init(0) Warning |
a7b2e184 | 718 | Warn about use of multi-character character constants. |
fef3106c | 719 | |
76f86d00 | 720 | Wnarrowing |
765189ff | 721 | C ObjC C++ ObjC++ Warning Var(warn_narrowing) Init(-1) LangEnabledBy(C++ ObjC++,Wall || Wc++11-compat) |
a7b2e184 | 722 | Warn about narrowing conversions within { } that are ill-formed in C++11. |
76f86d00 | 723 | |
fef3106c | 724 | Wnested-externs |
c662432e | 725 | C ObjC Var(warn_nested_externs) Warning |
a7b2e184 | 726 | Warn about \"extern\" declarations not at file scope. |
fef3106c | 727 | |
59f9c2ed JM |
728 | Wnoexcept |
729 | C++ ObjC++ Var(warn_noexcept) Warning | |
a7b2e184 | 730 | Warn when a noexcept expression evaluates to false even though the expression can't actually throw. |
59f9c2ed | 731 | |
fef3106c | 732 | Wnon-template-friend |
c662432e | 733 | C++ ObjC++ Var(warn_nontemplate_friend) Init(1) Warning |
a7b2e184 | 734 | Warn when non-templatized friend functions are declared within a template. |
fef3106c NB |
735 | |
736 | Wnon-virtual-dtor | |
880a467b | 737 | C++ ObjC++ Var(warn_nonvdtor) Warning LangEnabledBy(C++ ObjC++,Weffc++) |
a7b2e184 | 738 | Warn about non-virtual destructors. |
fef3106c NB |
739 | |
740 | Wnonnull | |
7332899a | 741 | C ObjC C++ ObjC++ Var(warn_nonnull) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 1,0) |
a7b2e184 | 742 | Warn about NULL being passed to argument slots marked as requiring non-NULL. |
fef3106c | 743 | |
7332899a MLI |
744 | Wnonnull |
745 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
746 | ; | |
747 | ||
bf14eba2 JJ |
748 | Wnonnull-compare |
749 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
750 | ; | |
751 | ||
1ef33fd4 | 752 | Wnormalized |
54d62f51 | 753 | C ObjC C++ ObjC++ Warning Alias(Wnormalized=,nfc,none) |
1ef33fd4 MLI |
754 | ; |
755 | ||
50668cf6 | 756 | Wnormalized= |
b559c810 | 757 | C ObjC C++ ObjC++ RejectNegative Joined Warning CPP(warn_normalize) CppReason(CPP_W_NORMALIZE) Init(normalized_C) Var(cpp_warn_normalize) Enum(cpp_normalize_level) |
a7b2e184 | 758 | -Wnormalized=<none|id|nfc|nfkc> Warn about non-normalised Unicode strings. |
1ef33fd4 MLI |
759 | |
760 | ; Required for these enum values. | |
761 | SourceInclude | |
762 | cpplib.h | |
763 | ||
764 | Enum | |
765 | Name(cpp_normalize_level) Type(int) UnknownError(argument %qs to %<-Wnormalized%> not recognized) | |
766 | ||
767 | EnumValue | |
768 | Enum(cpp_normalize_level) String(none) Value(normalized_none) | |
769 | ||
770 | EnumValue | |
771 | Enum(cpp_normalize_level) String(nfkc) Value(normalized_KC) | |
772 | ||
773 | EnumValue | |
774 | Enum(cpp_normalize_level) String(id) Value(normalized_identifier_C) | |
775 | ||
776 | EnumValue | |
777 | Enum(cpp_normalize_level) String(nfc) Value(normalized_C) | |
50668cf6 | 778 | |
fef3106c | 779 | Wold-style-cast |
c662432e | 780 | C++ ObjC++ Var(warn_old_style_cast) Warning |
a7b2e184 | 781 | Warn if a C-style cast is used in a program. |
fef3106c | 782 | |
b1ed4cb4 | 783 | Wold-style-declaration |
95744782 | 784 | C ObjC Var(warn_old_style_declaration) Warning EnabledBy(Wextra) |
a7b2e184 | 785 | Warn for obsolescent usage in a declaration. |
b1ed4cb4 | 786 | |
c034f121 | 787 | Wold-style-definition |
c662432e | 788 | C ObjC Var(warn_old_style_definition) Warning |
a7b2e184 | 789 | Warn if an old-style parameter definition is used. |
c034f121 | 790 | |
8b5e1202 SO |
791 | Wopenmp-simd |
792 | C C++ Var(warn_openmp_simd) Warning LangEnabledBy(C C++,Wall) | |
a7b2e184 | 793 | Warn if a simd directive is overridden by the vectorizer cost model. |
8b5e1202 | 794 | |
89a42ac8 | 795 | Woverlength-strings |
34a180a6 | 796 | C ObjC C++ ObjC++ Var(warn_overlength_strings) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic) |
a7b2e184 | 797 | Warn if a string is longer than the maximum portable length specified by the standard. |
89a42ac8 | 798 | |
fef3106c | 799 | Woverloaded-virtual |
c662432e | 800 | C++ ObjC++ Var(warn_overloaded_virtual) Warning |
a7b2e184 | 801 | Warn about overloaded virtual function names. |
fef3106c | 802 | |
7ed322d7 | 803 | Woverride-init |
95744782 | 804 | C ObjC Var(warn_override_init) Warning EnabledBy(Wextra) |
a7b2e184 | 805 | Warn about overriding initializers without side effects. |
7ed322d7 | 806 | |
755e528f MP |
807 | Woverride-init-side-effects |
808 | C ObjC Var(warn_override_init_side_effects) Init(1) Warning | |
a7b2e184 | 809 | Warn about overriding initializers with side effects. |
755e528f | 810 | |
2cd36c22 | 811 | Wpacked-bitfield-compat |
bee6fa6d | 812 | C ObjC C++ ObjC++ Var(warn_packed_bitfield_compat) Init(-1) Warning |
a7b2e184 | 813 | Warn about packed bit-fields whose offset changed in GCC 4.4. |
2cd36c22 | 814 | |
fef3106c | 815 | Wparentheses |
4a0ae68e | 816 | C ObjC C++ ObjC++ Var(warn_parentheses) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 817 | Warn about possibly missing parentheses. |
fef3106c | 818 | |
c1771a20 | 819 | Wpedantic |
b559c810 | 820 | C ObjC C++ ObjC++ CPP(cpp_pedantic) CppReason(CPP_W_PEDANTIC) Warning |
c1771a20 MLI |
821 | ; Documented in common.opt |
822 | ||
fef3106c | 823 | Wpmf-conversions |
c662432e | 824 | C++ ObjC++ Var(warn_pmf2ptr) Init(1) Warning |
a7b2e184 | 825 | Warn when converting the type of pointers to member functions. |
fef3106c NB |
826 | |
827 | Wpointer-arith | |
44d90fe1 | 828 | C ObjC C++ ObjC++ Var(warn_pointer_arith) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic) |
a7b2e184 | 829 | Warn about function pointer arithmetic. |
fef3106c | 830 | |
4a0ae68e | 831 | Wpointer-sign |
27e51192 | 832 | C ObjC Var(warn_pointer_sign) Warning LangEnabledBy(C ObjC,Wall || Wpedantic) |
a7b2e184 | 833 | Warn when a pointer differs in signedness in an assignment. |
4a0ae68e | 834 | |
53a2494e | 835 | Wpointer-to-int-cast |
c662432e | 836 | C ObjC Var(warn_pointer_to_int_cast) Init(1) Warning |
a7b2e184 | 837 | Warn when a pointer is cast to an integer of a different size. |
53a2494e | 838 | |
b9b8dde3 | 839 | Wpragmas |
c662432e | 840 | C ObjC C++ ObjC++ Var(warn_pragmas) Init(1) Warning |
a7b2e184 | 841 | Warn about misuses of pragmas. |
b9b8dde3 | 842 | |
9a179d01 NP |
843 | Wproperty-assign-default |
844 | ObjC ObjC++ Var(warn_property_assign_default) Init(1) Warning | |
a7b2e184 | 845 | Warn if a property for an Objective-C object has no assign semantics specified. |
9a179d01 | 846 | |
fef3106c | 847 | Wprotocol |
c662432e | 848 | ObjC ObjC++ Var(warn_protocol) Init(1) Warning |
a7b2e184 | 849 | Warn if inherited methods are unimplemented. |
fef3106c | 850 | |
e2f5cc96 | 851 | Wplacement-new |
46cb9332 MS |
852 | C++ Warning Alias(Wplacement-new=, 1, 0) |
853 | Warn for placement new expressions with undefined behavior. | |
854 | ||
855 | Wplacement-new= | |
856 | C++ Joined RejectNegative UInteger Var(warn_placement_new) Init(-1) Warning | |
eb11eb15 | 857 | Warn for placement new expressions with undefined behavior. |
e2f5cc96 | 858 | |
fef3106c | 859 | Wredundant-decls |
c662432e | 860 | C ObjC C++ ObjC++ Var(warn_redundant_decls) Warning |
a7b2e184 | 861 | Warn about multiple declarations of the same object. |
fef3106c | 862 | |
a2c6e7f2 JJ |
863 | Wregister |
864 | C++ ObjC++ Var(warn_register) Warning | |
865 | Warn about uses of register storage specifier. | |
866 | ||
fef3106c | 867 | Wreorder |
f2bc201f | 868 | C++ ObjC++ Var(warn_reorder) Warning LangEnabledBy(C++ ObjC++,Wall) |
a7b2e184 | 869 | Warn when the compiler reorders code. |
fef3106c NB |
870 | |
871 | Wreturn-type | |
4a0ae68e | 872 | C ObjC C++ ObjC++ Var(warn_return_type) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 873 | Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++). |
fef3106c | 874 | |
ee45a32d EB |
875 | Wscalar-storage-order |
876 | C ObjC C++ ObjC++ Init(1) Warning | |
877 | Warn on suspicious constructs involving reverse scalar storage order. | |
878 | ||
fef3106c | 879 | Wselector |
c662432e | 880 | ObjC ObjC++ Var(warn_selector) Warning |
a7b2e184 | 881 | Warn if a selector has multiple methods. |
fef3106c | 882 | |
13c21655 PC |
883 | Wsequence-point |
884 | C ObjC C++ ObjC++ Var(warn_sequence_point) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 885 | Warn about possible violations of sequence point rules. |
13c21655 | 886 | |
dcaaa5a0 | 887 | Wshadow-ivar |
dff8943f | 888 | ObjC ObjC++ Var(warn_shadow_ivar) EnabledBy(Wshadow) Init(1) Warning |
a7b2e184 | 889 | Warn if a local declaration hides an instance variable. |
dcaaa5a0 | 890 | |
451b5e48 MP |
891 | Wshift-overflow |
892 | C ObjC C++ ObjC++ Warning Alias(Wshift-overflow=, 1, 0) | |
a7b2e184 | 893 | Warn if left shift of a signed value overflows. |
451b5e48 MP |
894 | |
895 | Wshift-overflow= | |
896 | C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_shift_overflow) Init(-1) Warning | |
a7b2e184 | 897 | Warn if left shift of a signed value overflows. |
451b5e48 | 898 | |
13c21655 PC |
899 | Wshift-count-negative |
900 | C ObjC C++ ObjC++ Var(warn_shift_count_negative) Init(1) Warning | |
a7b2e184 | 901 | Warn if shift count is negative. |
13c21655 PC |
902 | |
903 | Wshift-count-overflow | |
904 | C ObjC C++ ObjC++ Var(warn_shift_count_overflow) Init(1) Warning | |
a7b2e184 | 905 | Warn if shift count >= width of type. |
fef3106c | 906 | |
0173bd2a MP |
907 | Wshift-negative-value |
908 | C ObjC C++ ObjC++ Var(warn_shift_negative_value) Init(-1) Warning | |
a7b2e184 | 909 | Warn if left shifting a negative value. |
0173bd2a | 910 | |
fef3106c | 911 | Wsign-compare |
4a0ae68e | 912 | C ObjC C++ ObjC++ Var(warn_sign_compare) Warning LangEnabledBy(C++ ObjC++,Wall) |
a7b2e184 | 913 | Warn about signed-unsigned comparisons. |
fef3106c | 914 | |
4a0ae68e MLI |
915 | Wsign-compare |
916 | C ObjC C++ ObjC++ EnabledBy(Wextra) | |
917 | ; | |
918 | ||
919 | Wsign-conversion | |
63bbf46d | 920 | C ObjC C++ ObjC++ Var(warn_sign_conversion) Warning LangEnabledBy(C ObjC,Wconversion) |
a7b2e184 | 921 | Warn for implicit type conversions between signed and unsigned integers. |
4a0ae68e | 922 | |
fef3106c | 923 | Wsign-promo |
c662432e | 924 | C++ ObjC++ Var(warn_sign_promo) Warning |
a7b2e184 | 925 | Warn when overload promotes from unsigned to signed. |
fef3106c | 926 | |
b2f97e4a | 927 | Wstrict-null-sentinel |
5498f011 | 928 | C++ ObjC++ Warning Var(warn_strict_null_sentinel) |
a7b2e184 | 929 | Warn about uncasted NULL used as sentinel. |
b2f97e4a | 930 | |
fef3106c | 931 | Wstrict-prototypes |
c662432e | 932 | C ObjC Var(warn_strict_prototypes) Warning |
a7b2e184 | 933 | Warn about unprototyped function declarations. |
fef3106c | 934 | |
65d4f2cd MLI |
935 | Wstrict-aliasing= |
936 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 3, 0) | |
937 | ; | |
938 | ||
939 | Wstrict-overflow= | |
940 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0) | |
941 | ; | |
942 | ||
6e955430 | 943 | Wstrict-selector-match |
c662432e | 944 | ObjC ObjC++ Var(warn_strict_selector_match) Warning |
a7b2e184 | 945 | Warn if type signatures of candidate methods do not match exactly. |
6e955430 | 946 | |
23462d4d UB |
947 | Wsync-nand |
948 | C C++ Var(warn_sync_nand) Init(1) Warning | |
a7b2e184 | 949 | Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used. |
23462d4d | 950 | |
fef3106c | 951 | Wsynth |
c662432e | 952 | C++ ObjC++ Var(warn_synth) Warning |
a7b2e184 | 953 | Deprecated. This switch has no effect. |
fef3106c NB |
954 | |
955 | Wsystem-headers | |
c662432e | 956 | C ObjC C++ ObjC++ Warning |
9a0f3e86 | 957 | ; Documented in common.opt |
fef3106c | 958 | |
05b28fd6 MP |
959 | Wtautological-compare |
960 | C ObjC C++ ObjC++ Var(warn_tautological_compare) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
a7b2e184 | 961 | Warn if a comparison always evaluates to true or false. |
05b28fd6 | 962 | |
8243e2a9 JM |
963 | Wterminate |
964 | C++ ObjC++ Warning Var(warn_terminate) Init(1) | |
a7b2e184 | 965 | Warn if a throw expression will always result in a call to terminate(). |
8243e2a9 | 966 | |
fef3106c | 967 | Wtraditional |
b559c810 | 968 | C ObjC CPP(cpp_warn_traditional) CppReason(CPP_W_TRADITIONAL) Var(warn_traditional) Init(0) Warning |
a7b2e184 | 969 | Warn about features not present in traditional C. |
fef3106c | 970 | |
05170031 | 971 | Wtraditional-conversion |
c662432e | 972 | C ObjC Var(warn_traditional_conversion) Warning |
a7b2e184 | 973 | Warn of prototypes causing type conversions different from what would happen in the absence of prototype. |
05170031 | 974 | |
fef3106c | 975 | Wtrigraphs |
b559c810 | 976 | C ObjC C++ ObjC++ CPP(warn_trigraphs) CppReason(CPP_W_TRIGRAPHS) Var(cpp_warn_trigraphs) Init(2) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 977 | Warn if trigraphs are encountered that might affect the meaning of the program. |
fef3106c NB |
978 | |
979 | Wundeclared-selector | |
c662432e | 980 | ObjC ObjC++ Var(warn_undeclared_selector) Warning |
a7b2e184 | 981 | Warn about @selector()s without previously declared methods. |
fef3106c NB |
982 | |
983 | Wundef | |
b559c810 | 984 | C ObjC C++ ObjC++ CPP(warn_undef) CppReason(CPP_W_UNDEF) Var(cpp_warn_undef) Init(0) Warning |
a7b2e184 | 985 | Warn if an undefined macro is used in an #if directive. |
fef3106c | 986 | |
4a0ae68e MLI |
987 | Wuninitialized |
988 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
989 | ; | |
990 | ||
991 | Wmaybe-uninitialized | |
992 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
993 | ; | |
994 | ||
fef3106c | 995 | Wunknown-pragmas |
34a180a6 | 996 | C ObjC C++ ObjC++ Warning Var(warn_unknown_pragmas) LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0) |
a7b2e184 | 997 | Warn about unrecognized pragmas. |
fef3106c | 998 | |
6ec637a4 JJ |
999 | Wunsuffixed-float-constants |
1000 | C ObjC Var(warn_unsuffixed_float_constants) Warning | |
a7b2e184 | 1001 | Warn about unsuffixed float constants. |
6ec637a4 | 1002 | |
4a0ae68e MLI |
1003 | Wunused |
1004 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall) | |
1005 | ; documented in common.opt | |
1006 | ||
3797cb21 | 1007 | Wunused-local-typedefs |
650dc14a | 1008 | C ObjC C++ ObjC++ Var(warn_unused_local_typedefs) Warning EnabledBy(Wunused) |
a7b2e184 | 1009 | Warn when typedefs locally defined in a function are not used. |
3797cb21 | 1010 | |
fef3106c | 1011 | Wunused-macros |
b559c810 | 1012 | C ObjC C++ ObjC++ CppReason(CPP_W_UNUSED_MACROS) Var(cpp_warn_unused_macros) Warning |
a7b2e184 | 1013 | Warn about macros defined in the main file that are not used. |
fef3106c | 1014 | |
156f545a MLI |
1015 | Wunused-result |
1016 | C ObjC C++ ObjC++ Var(warn_unused_result) Init(1) Warning | |
a7b2e184 | 1017 | Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value. |
156f545a | 1018 | |
0f876f22 MW |
1019 | Wunused-variable |
1020 | C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wunused) | |
1021 | ; documented in common.opt | |
1022 | ||
1023 | Wunused-const-variable | |
4246c8da MW |
1024 | C ObjC C++ ObjC++ Warning Alias(Wunused-const-variable=, 2, 0) |
1025 | Warn when a const variable is unused. | |
1026 | ||
1027 | Wunused-const-variable= | |
1028 | C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_unused_const_variable) Warning LangEnabledBy(C ObjC,Wunused-variable, 1, 0) | |
a7b2e184 | 1029 | Warn when a const variable is unused. |
0f876f22 | 1030 | |
e5b79219 | 1031 | Wvariadic-macros |
27e51192 | 1032 | C ObjC C++ ObjC++ CPP(warn_variadic_macros) CppReason(CPP_W_VARIADIC_MACROS) Var(cpp_warn_variadic_macros) Init(0) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic || Wtraditional) |
a7b2e184 | 1033 | Warn about using variadic macros. |
e5b79219 | 1034 | |
b9c8da34 DS |
1035 | Wvarargs |
1036 | C ObjC C++ ObjC++ Warning Var(warn_varargs) Init(1) | |
a7b2e184 | 1037 | Warn about questionable usage of the macros used to retrieve variable arguments. |
b9c8da34 | 1038 | |
50d50fc7 SP |
1039 | Wvla |
1040 | C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning | |
a7b2e184 | 1041 | Warn if a variable length array is used. |
50d50fc7 | 1042 | |
adc577c5 AH |
1043 | Wvla-larger-than= |
1044 | C ObjC C++ ObjC++ Var(warn_vla_limit) Warning Joined RejectNegative UInteger | |
1045 | -Wvla-larger-than=<number> Warn on unbounded uses of variable-length arrays, and | |
1046 | on bounded uses of variable-length arrays whose bound can be | |
1047 | larger than <number> bytes. | |
1048 | ||
16302daf | 1049 | Wvolatile-register-var |
4a0ae68e | 1050 | C ObjC C++ ObjC++ Var(warn_volatile_register_var) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) |
a7b2e184 | 1051 | Warn when a register variable is declared volatile. |
16302daf | 1052 | |
6b333269 NS |
1053 | Wvirtual-inheritance |
1054 | C++ ObjC++ Var(warn_virtual_inheritance) Warning | |
a7b2e184 | 1055 | Warn on direct virtual inheritance. |
6b333269 | 1056 | |
f14edc1a JM |
1057 | Wvirtual-move-assign |
1058 | C++ ObjC++ Var(warn_virtual_move_assign) Warning Init(1) | |
a7b2e184 | 1059 | Warn if a virtual base has a non-trivial move assignment operator. |
f14edc1a | 1060 | |
fef3106c | 1061 | Wwrite-strings |
c662432e | 1062 | C ObjC C++ ObjC++ Var(warn_write_strings) Warning |
d8a07487 | 1063 | In C++, nonzero means warn about deprecated conversion from string literals to 'char *'. In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard. |
fef3106c | 1064 | |
89401152 PC |
1065 | Wzero-as-null-pointer-constant |
1066 | C++ ObjC++ Var(warn_zero_as_null_pointer_constant) Warning | |
a7b2e184 | 1067 | Warn when a literal '0' is used as null pointer. |
89401152 | 1068 | |
04398fa8 PC |
1069 | Wuseless-cast |
1070 | C++ ObjC++ Var(warn_useless_cast) Warning | |
a7b2e184 | 1071 | Warn about useless casts. |
04398fa8 | 1072 | |
273aa49e PC |
1073 | Wsubobject-linkage |
1074 | C++ ObjC++ Var(warn_subobject_linkage) Warning Init(1) | |
a7b2e184 | 1075 | Warn if a class type has a base or a field whose type uses the anonymous namespace or depends on a type with no linkage. |
273aa49e | 1076 | |
d6e83a8d MM |
1077 | Wduplicate-decl-specifier |
1078 | C ObjC Var(warn_duplicate_decl_specifier) Warning LangEnabledBy(C ObjC,Wall) | |
1079 | Warn when a declaration has duplicate const, volatile, restrict or _Atomic specifier. | |
1080 | ||
fef3106c NB |
1081 | ansi |
1082 | C ObjC C++ ObjC++ | |
a7b2e184 | 1083 | A synonym for -std=c89 (for C) or -std=c++98 (for C++). |
fef3106c NB |
1084 | |
1085 | d | |
1086 | C ObjC C++ ObjC++ Joined | |
72de27ea | 1087 | ; Documented in common.opt. FIXME - what about -dI, -dD, -dN and -dD? |
fef3106c | 1088 | |
62984918 JM |
1089 | fabi-compat-version= |
1090 | C++ ObjC++ Joined RejectNegative UInteger Var(flag_abi_compat_version) Init(-1) | |
a7b2e184 | 1091 | The version of the C++ ABI used for -Wabi warnings and link compatibility aliases. |
62984918 | 1092 | |
fef3106c | 1093 | faccess-control |
5498f011 | 1094 | C++ ObjC++ Var(flag_access_control) Init(1) |
a7b2e184 | 1095 | Enforce class member access control semantics. |
fef3106c | 1096 | |
da5182be TQ |
1097 | fada-spec-parent= |
1098 | C ObjC C++ ObjC++ RejectNegative Joined Var(ada_specs_parent) | |
a7b2e184 | 1099 | -fada-spec-parent=unit Dump Ada specs as child units of given parent. |
da5182be | 1100 | |
af63ba4b JM |
1101 | faligned-new |
1102 | C++ ObjC++ Alias(faligned-new=,1,0) | |
1103 | Support C++17 allocation of over-aligned types. | |
1104 | ||
1105 | faligned-new= | |
2e1c20b1 | 1106 | C++ ObjC++ Joined RejectNegative Var(aligned_new_threshold) UInteger Init(-1) |
af63ba4b JM |
1107 | -faligned-new=<N> Use C++17 over-aligned type allocation for alignments greater than N. |
1108 | ||
fef3106c | 1109 | fall-virtual |
2d2bd949 | 1110 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1111 | |
6637388f TG |
1112 | fallow-parameterless-variadic-functions |
1113 | C ObjC Var(flag_allow_parameterless_variadic_functions) | |
a7b2e184 | 1114 | Allow variadic functions without named parameter. |
6637388f | 1115 | |
fef3106c | 1116 | falt-external-templates |
2d2bd949 | 1117 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
a7b2e184 | 1118 | No longer supported. |
fef3106c NB |
1119 | |
1120 | fasm | |
5498f011 | 1121 | C ObjC C++ ObjC++ Var(flag_no_asm, 0) |
a7b2e184 | 1122 | Recognize the \"asm\" keyword. |
fef3106c | 1123 | |
10e48e39 RO |
1124 | ; Define extra predefined macros for use in libgcc. |
1125 | fbuilding-libgcc | |
1126 | C ObjC C++ ObjC++ Undocumented Var(flag_building_libgcc) | |
1127 | ||
fef3106c | 1128 | fbuiltin |
5498f011 | 1129 | C ObjC C++ ObjC++ Var(flag_no_builtin, 0) |
a7b2e184 | 1130 | Recognize built-in functions. |
fef3106c NB |
1131 | |
1132 | fbuiltin- | |
1133 | C ObjC C++ ObjC++ Joined | |
1134 | ||
5dc99c46 SB |
1135 | fcanonical-system-headers |
1136 | C ObjC C++ ObjC++ | |
1137 | Where shorter, use canonicalized paths to systems headers. | |
1138 | ||
d5e254e1 | 1139 | fcheck-pointer-bounds |
79d64904 | 1140 | C ObjC C++ ObjC++ LTO Report Var(flag_check_pointer_bounds) |
d5e254e1 IE |
1141 | Add Pointer Bounds Checker instrumentation. fchkp-* flags are used to |
1142 | control instrumentation. Currently available for C, C++ and ObjC. | |
1143 | ||
1144 | fchkp-check-incomplete-type | |
79d64904 | 1145 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_incomplete_type) Init(1) |
a7b2e184 | 1146 | Generate pointer bounds checks for variables with incomplete type. |
d5e254e1 IE |
1147 | |
1148 | fchkp-zero-input-bounds-for-main | |
79d64904 | 1149 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_zero_input_bounds_for_main) Init(0) |
d5e254e1 IE |
1150 | Use zero bounds for all incoming arguments in 'main' function. It helps when |
1151 | instrumented binaries are used with legacy libs. | |
1152 | ||
1153 | fchkp-first-field-has-own-bounds | |
79d64904 | 1154 | C ObjC C++ ObjC++ LTO RejectNegative Report Var(flag_chkp_first_field_has_own_bounds) |
d5e254e1 IE |
1155 | Forces Pointer Bounds Checker to use narrowed bounds for address of the first |
1156 | field in the structure. By default pointer to the first field has the same | |
1157 | bounds as pointer to the whole structure. | |
1158 | ||
1159 | fchkp-narrow-bounds | |
79d64904 | 1160 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_narrow_bounds) Init(1) |
d5e254e1 IE |
1161 | Control how Pointer Bounds Checker handle pointers to object fields. When |
1162 | narrowing is on, field bounds are used. Otherwise full object bounds are used. | |
1163 | ||
1164 | fchkp-narrow-to-innermost-array | |
79d64904 | 1165 | C ObjC C++ ObjC++ LTO RejectNegative Report Var(flag_chkp_narrow_to_innermost_arrray) |
d5e254e1 IE |
1166 | Forces Pointer Bounds Checker to use bounds of the innermost arrays in case of |
1167 | nested static arryas access. By default outermost array is used. | |
1168 | ||
1169 | fchkp-optimize | |
1170 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_optimize) Init(-1) | |
1171 | Allow Pointer Bounds Checker optimizations. By default allowed | |
1172 | on optimization levels >0. | |
1173 | ||
1174 | fchkp-use-fast-string-functions | |
1175 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_use_fast_string_functions) Init(0) | |
1176 | Allow to use *_nobnd versions of string functions by Pointer Bounds Checker. | |
1177 | ||
1178 | fchkp-use-nochk-string-functions | |
1179 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_use_nochk_string_functions) Init(0) | |
1180 | Allow to use *_nochk versions of string functions by Pointer Bounds Checker. | |
1181 | ||
1182 | fchkp-use-static-bounds | |
79d64904 | 1183 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_use_static_bounds) Init(1) |
d5e254e1 IE |
1184 | Use statically initialized variable for vars bounds instead of |
1185 | generating them each time it is required. | |
1186 | ||
1187 | fchkp-use-static-const-bounds | |
79d64904 | 1188 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_use_static_const_bounds) Init(-1) |
d5e254e1 IE |
1189 | Use statically initialized variable for constant bounds instead of |
1190 | generating them each time it is required. | |
1191 | ||
1192 | fchkp-treat-zero-dynamic-size-as-infinite | |
79d64904 | 1193 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_zero_dynamic_size_as_infinite) Init(0) |
d5e254e1 IE |
1194 | With this option zero size obtained dynamically for objects with |
1195 | incomplete type will be treated as infinite. | |
1196 | ||
1197 | fchkp-check-read | |
1198 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_check_read) Init(1) | |
1199 | Generate checks for all read accesses to memory. | |
1200 | ||
1201 | fchkp-check-write | |
1202 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_check_write) Init(1) | |
1203 | Generate checks for all write accesses to memory. | |
1204 | ||
1205 | fchkp-store-bounds | |
1206 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_store_bounds) Init(1) | |
1207 | Generate bounds stores for pointer writes. | |
1208 | ||
1209 | fchkp-instrument-calls | |
1210 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_instrument_calls) Init(1) | |
1211 | Generate bounds passing for calls. | |
1212 | ||
1213 | fchkp-instrument-marked-only | |
1214 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_instrument_marked_only) Init(0) | |
1215 | Instrument only functions marked with bnd_instrument attribute. | |
1216 | ||
226d62d2 IE |
1217 | fchkp-use-wrappers |
1218 | C ObjC C++ ObjC++ LTO Report Var(flag_chkp_use_wrappers) Init(1) | |
1219 | Transform instrumented builtin calls into calls to wrappers. | |
1220 | ||
5373cd33 IE |
1221 | static-libmpx |
1222 | Driver | |
1223 | ||
d2d7e672 IE |
1224 | static-libmpxwrappers |
1225 | Driver | |
1226 | ||
36536d79 | 1227 | fcilkplus |
b72271b9 | 1228 | C ObjC C++ ObjC++ LTO Report Var(flag_cilkplus) Init(0) |
a7b2e184 | 1229 | Enable Cilk Plus. |
36536d79 | 1230 | |
971e17ff AS |
1231 | fconcepts |
1232 | C++ ObjC++ Var(flag_concepts) | |
a7b2e184 | 1233 | Enable support for C++ concepts. |
971e17ff | 1234 | |
fef3106c NB |
1235 | fcond-mismatch |
1236 | C ObjC C++ ObjC++ | |
a7b2e184 | 1237 | Allow the arguments of the '?' operator to have different types. |
fef3106c NB |
1238 | |
1239 | fconserve-space | |
5498f011 | 1240 | C++ ObjC++ Var(flag_conserve_space) |
6f07a821 | 1241 | Does nothing. Preserved for backward compatibility. |
fef3106c | 1242 | |
fef3106c | 1243 | fconstant-string-class= |
61ff2bdc | 1244 | ObjC ObjC++ Joined MissingArgError(no class name specified with %qs) |
a7b2e184 | 1245 | -fconst-string-class=<name> Use class <name> for constant strings. |
fef3106c | 1246 | |
17bc631c | 1247 | fconstexpr-depth= |
49a000c3 | 1248 | C++ ObjC++ Joined RejectNegative UInteger Var(max_constexpr_depth) Init(512) |
a7b2e184 | 1249 | -fconstexpr-depth=<number> Specify maximum constexpr recursion depth. |
17bc631c | 1250 | |
5ec2cd9f JM |
1251 | fconstexpr-loop-limit= |
1252 | C++ ObjC++ Joined RejectNegative UInteger Var(constexpr_loop_limit) Init(262144) | |
1253 | -fconstexpr-loop-limit=<number> Specify maximum constexpr loop iteration count. | |
1254 | ||
847e697a TT |
1255 | fdebug-cpp |
1256 | C ObjC C++ ObjC++ | |
a7b2e184 | 1257 | Emit debug annotations during preprocessing. |
847e697a | 1258 | |
5f5babf1 | 1259 | fdeduce-init-list |
15694fdd | 1260 | C++ ObjC++ Var(flag_deduce_init_list) Init(0) |
a7b2e184 | 1261 | -fdeduce-init-list enable deduction of std::initializer_list for a template type parameter from a brace-enclosed initializer-list. |
5f5babf1 | 1262 | |
1f26ac87 JM |
1263 | fdeclone-ctor-dtor |
1264 | C++ ObjC++ Var(flag_declone_ctor_dtor) Init(-1) | |
a7b2e184 | 1265 | Factor complex constructors and destructors to favor space over speed. |
1f26ac87 | 1266 | |
fef3106c | 1267 | fdefault-inline |
2d2bd949 | 1268 | C++ ObjC++ Ignore |
5498f011 | 1269 | Does nothing. Preserved for backward compatibility. |
fef3106c | 1270 | |
ccfc4c91 OW |
1271 | fdirectives-only |
1272 | C ObjC C++ ObjC++ | |
1273 | Preprocess directives only. | |
1274 | ||
fef3106c NB |
1275 | fdollars-in-identifiers |
1276 | C ObjC C++ ObjC++ | |
a7b2e184 | 1277 | Permit '$' as an identifier character. |
fef3106c | 1278 | |
3b78de56 AC |
1279 | fdump-ada-spec |
1280 | C ObjC C++ ObjC++ RejectNegative Var(flag_dump_ada_spec) | |
a7b2e184 | 1281 | Write all declarations as Ada code transitively. |
3b78de56 AC |
1282 | |
1283 | fdump-ada-spec-slim | |
1284 | C ObjC C++ ObjC++ RejectNegative Var(flag_dump_ada_spec_slim) | |
a7b2e184 | 1285 | Write all declarations as Ada code for the given file only. |
3b78de56 | 1286 | |
fef3106c | 1287 | felide-constructors |
5498f011 | 1288 | C++ ObjC++ Var(flag_elide_constructors) Init(1) |
fef3106c NB |
1289 | |
1290 | fenforce-eh-specs | |
5498f011 | 1291 | C++ ObjC++ Var(flag_enforce_eh_specs) Init(1) |
a7b2e184 | 1292 | Generate code to check exception specifications. |
fef3106c NB |
1293 | |
1294 | fenum-int-equiv | |
2d2bd949 | 1295 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1296 | |
e6cc3a24 ZW |
1297 | fexec-charset= |
1298 | C ObjC C++ ObjC++ Joined RejectNegative | |
a7b2e184 | 1299 | -fexec-charset=<cset> Convert all strings and character constants to character set <cset>. |
e6cc3a24 | 1300 | |
af15a2fe JM |
1301 | fextended-identifiers |
1302 | C ObjC C++ ObjC++ | |
a7b2e184 | 1303 | Permit universal character names (\\u and \\U) in identifiers. |
af15a2fe | 1304 | |
16dd5cfe EC |
1305 | finput-charset= |
1306 | C ObjC C++ ObjC++ Joined RejectNegative | |
a7b2e184 | 1307 | -finput-charset=<cset> Specify the default character set for source files. |
16dd5cfe | 1308 | |
5af057d8 JM |
1309 | fextern-tls-init |
1310 | C++ ObjC++ Var(flag_extern_tls_init) Init(-1) | |
a7b2e184 | 1311 | Support dynamic initialization of thread-local variables in a different translation unit. |
16dd5cfe | 1312 | |
fef3106c | 1313 | fexternal-templates |
2d2bd949 | 1314 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1315 | |
fef3106c | 1316 | ffor-scope |
5498f011 | 1317 | C++ ObjC++ Var(flag_new_for_scope) Init(1) |
a7b2e184 | 1318 | Scope of for-init-statement variables is local to the loop. |
fef3106c NB |
1319 | |
1320 | ffreestanding | |
820b51ae | 1321 | C ObjC C++ ObjC++ |
a7b2e184 | 1322 | Do not assume that standard C libraries and \"main\" exist. |
fef3106c NB |
1323 | |
1324 | fgnu-keywords | |
5498f011 | 1325 | C++ ObjC++ Var(flag_no_gnu_keywords, 0) |
a7b2e184 | 1326 | Recognize GNU-defined keywords. |
fef3106c NB |
1327 | |
1328 | fgnu-runtime | |
fb5610fb | 1329 | ObjC ObjC++ LTO Report RejectNegative Var(flag_next_runtime,0) Init(NEXT_OBJC_RUNTIME) |
a7b2e184 | 1330 | Generate code for GNU runtime environment. |
fef3106c | 1331 | |
da1c7394 | 1332 | fgnu89-inline |
2cbac420 | 1333 | C ObjC Var(flag_gnu89_inline) Init(-1) |
a7b2e184 | 1334 | Use traditional GNU semantics for inline functions. |
da1c7394 | 1335 | |
fef3106c | 1336 | fguiding-decls |
2d2bd949 | 1337 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c NB |
1338 | |
1339 | fhandle-exceptions | |
2d2bd949 | 1340 | C++ ObjC++ Optimization Alias(fexceptions) Warn({-fhandle-exceptions has been renamed -fexceptions (and is now on by default)}) |
fef3106c NB |
1341 | |
1342 | fhonor-std | |
2d2bd949 | 1343 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c NB |
1344 | |
1345 | fhosted | |
1346 | C ObjC | |
a7b2e184 | 1347 | Assume normal C execution environment. |
fef3106c NB |
1348 | |
1349 | fhuge-objects | |
2d2bd949 | 1350 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
a7b2e184 | 1351 | No longer supported. |
fef3106c NB |
1352 | |
1353 | fimplement-inlines | |
5498f011 | 1354 | C++ ObjC++ Var(flag_implement_inlines) Init(1) |
a7b2e184 | 1355 | Export functions even if they can be inlined. |
fef3106c NB |
1356 | |
1357 | fimplicit-inline-templates | |
5498f011 | 1358 | C++ ObjC++ Var(flag_implicit_inline_templates) Init(1) |
a7b2e184 | 1359 | Emit implicit instantiations of inline templates. |
fef3106c NB |
1360 | |
1361 | fimplicit-templates | |
5498f011 | 1362 | C++ ObjC++ Var(flag_implicit_templates) Init(1) |
a7b2e184 | 1363 | Emit implicit instantiations of templates. |
fef3106c | 1364 | |
31f7f784 JM |
1365 | fnew-inheriting-ctors |
1366 | C++ ObjC++ Var(flag_new_inheriting_ctors) Init(1) | |
1367 | Implement C++17 inheriting constructor semantics. | |
1368 | ||
d63d5d0c | 1369 | ffriend-injection |
2cbac420 | 1370 | C++ ObjC++ Var(flag_friend_injection) |
a7b2e184 | 1371 | Inject friend functions into enclosing namespace. |
d63d5d0c | 1372 | |
47ea1edf DK |
1373 | fkeep-inline-dllexport |
1374 | C C++ ObjC ObjC++ Var(flag_keep_inline_dllexport) Init(1) Report Condition(TARGET_DLLIMPORT_DECL_ATTRIBUTES) | |
a7b2e184 | 1375 | Don't emit dllexported inline functions unless needed. |
47ea1edf | 1376 | |
fef3106c | 1377 | flabels-ok |
2d2bd949 | 1378 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1379 | |
00c8e9f6 | 1380 | flax-vector-conversions |
5498f011 | 1381 | C ObjC C++ ObjC++ Var(flag_lax_vector_conversions) |
00c8e9f6 MS |
1382 | Allow implicit conversions between vectors with differing numbers of subparts and/or differing element types. |
1383 | ||
fef3106c | 1384 | fms-extensions |
5498f011 | 1385 | C ObjC C++ ObjC++ Var(flag_ms_extensions) |
a7b2e184 | 1386 | Don't warn about uses of Microsoft extensions. |
fef3106c | 1387 | |
5720c0dc | 1388 | fmudflap |
98906124 | 1389 | C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
5720c0dc RG |
1390 | |
1391 | fmudflapth | |
98906124 | 1392 | C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
5720c0dc RG |
1393 | |
1394 | fmudflapir | |
98906124 | 1395 | C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
5720c0dc | 1396 | |
fef3106c | 1397 | fname-mangling-version- |
2d2bd949 | 1398 | C++ ObjC++ Joined Ignore Warn(switch %qs is no longer supported) |
fef3106c NB |
1399 | |
1400 | fnew-abi | |
2d2bd949 | 1401 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c NB |
1402 | |
1403 | fnext-runtime | |
fb5610fb | 1404 | ObjC ObjC++ LTO Report RejectNegative Var(flag_next_runtime) |
a7b2e184 | 1405 | Generate code for NeXT (Apple Mac OS X) runtime environment. |
264fa2db ZL |
1406 | |
1407 | fnil-receivers | |
5498f011 | 1408 | ObjC ObjC++ Var(flag_nil_receivers) Init(1) |
a7b2e184 | 1409 | Assume that receivers of Objective-C messages may be nil. |
fef3106c | 1410 | |
dcaaa5a0 DP |
1411 | flocal-ivars |
1412 | ObjC ObjC++ Var(flag_local_ivars) Init(1) | |
1413 | Allow access to instance variables as if they were local declarations within instance method implementations. | |
1414 | ||
1415 | fivar-visibility= | |
1416 | ObjC ObjC++ Joined RejectNegative Enum(ivar_visibility) Var(default_ivar_visibility) Init(IVAR_VISIBILITY_PROTECTED) | |
a7b2e184 | 1417 | -fvisibility=[private|protected|public|package] Set the default symbol visibility. |
dcaaa5a0 DP |
1418 | |
1419 | Enum | |
1420 | Name(ivar_visibility) Type(enum ivar_visibility) UnknownError(unrecognized ivar visibility value %qs) | |
1421 | ||
1422 | EnumValue | |
1423 | Enum(ivar_visibility) String(private) Value(IVAR_VISIBILITY_PRIVATE) | |
1424 | ||
1425 | EnumValue | |
1426 | Enum(ivar_visibility) String(protected) Value(IVAR_VISIBILITY_PROTECTED) | |
1427 | ||
1428 | EnumValue | |
1429 | Enum(ivar_visibility) String(public) Value(IVAR_VISIBILITY_PUBLIC) | |
1430 | ||
1431 | EnumValue | |
1432 | Enum(ivar_visibility) String(package) Value(IVAR_VISIBILITY_PACKAGE) | |
1433 | ||
fef3106c | 1434 | fnonansi-builtins |
5498f011 | 1435 | C++ ObjC++ Var(flag_no_nonansi_builtin, 0) |
fef3106c NB |
1436 | |
1437 | fnonnull-objects | |
2d2bd949 | 1438 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1439 | |
9feb3d6a JM |
1440 | fnothrow-opt |
1441 | C++ ObjC++ Optimization Var(flag_nothrow_opt) | |
a7b2e184 | 1442 | Treat a throw() exception specification as noexcept to improve code size. |
9feb3d6a | 1443 | |
0a256240 | 1444 | fobjc-abi-version= |
fb5610fb | 1445 | ObjC ObjC++ LTO Joined Report RejectNegative UInteger Var(flag_objc_abi) |
0a256240 NP |
1446 | Specify which ABI to use for Objective-C family code and meta-data generation. |
1447 | ||
6e955430 ZL |
1448 | ; Generate special '- .cxx_construct' and '- .cxx_destruct' methods |
1449 | ; to initialize any non-POD ivars in Objective-C++ classes. | |
1450 | fobjc-call-cxx-cdtors | |
1451 | ObjC++ Var(flag_objc_call_cxx_cdtors) | |
a7b2e184 | 1452 | Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed. |
6e955430 ZL |
1453 | |
1454 | fobjc-direct-dispatch | |
1455 | ObjC ObjC++ Var(flag_objc_direct_dispatch) | |
a7b2e184 | 1456 | Allow fast jumps to the message dispatcher. |
6e955430 ZL |
1457 | |
1458 | ; Nonzero means that we will allow new ObjC exception syntax (@throw, | |
1459 | ; @try, etc.) in source code. | |
264fa2db | 1460 | fobjc-exceptions |
6e955430 | 1461 | ObjC ObjC++ Var(flag_objc_exceptions) |
a7b2e184 | 1462 | Enable Objective-C exception and synchronization syntax. |
264fa2db | 1463 | |
6e955430 | 1464 | fobjc-gc |
fb5610fb | 1465 | ObjC ObjC++ LTO Var(flag_objc_gc) |
a7b2e184 | 1466 | Enable garbage collection (GC) in Objective-C/Objective-C++ programs. |
6e955430 | 1467 | |
0a256240 NP |
1468 | fobjc-nilcheck |
1469 | ObjC ObjC++ Var(flag_objc_nilcheck,1) | |
1470 | Enable inline checks for nil receivers with the NeXT runtime and ABI version 2. | |
1471 | ||
6e955430 | 1472 | ; Nonzero means that we generate NeXT setjmp based exceptions. |
093c7153 | 1473 | fobjc-sjlj-exceptions |
6e955430 | 1474 | ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1) |
a7b2e184 | 1475 | Enable Objective-C setjmp exception handling runtime. |
093c7153 | 1476 | |
22d8d616 NP |
1477 | fobjc-std=objc1 |
1478 | ObjC ObjC++ Var(flag_objc1_only) | |
a7b2e184 | 1479 | Conform to the Objective-C 1.0 language as implemented in GCC 4.0. |
22d8d616 | 1480 | |
41dbbb37 | 1481 | fopenacc |
a0c88d06 | 1482 | C ObjC C++ ObjC++ LTO Var(flag_openacc) |
a7b2e184 | 1483 | Enable OpenACC. |
41dbbb37 | 1484 | |
b6adbb9f NS |
1485 | fopenacc-dim= |
1486 | C ObjC C++ ObjC++ LTO Joined Var(flag_openacc_dims) | |
1487 | Specify default OpenACC compute dimensions. | |
1488 | ||
953ff289 | 1489 | fopenmp |
1506ae0e | 1490 | C ObjC C++ ObjC++ LTO Var(flag_openmp) |
a7b2e184 | 1491 | Enable OpenMP (implies -frecursive in Fortran). |
953ff289 | 1492 | |
6d7f7e0a TB |
1493 | fopenmp-simd |
1494 | C ObjC C++ ObjC++ Var(flag_openmp_simd) | |
a7b2e184 | 1495 | Enable OpenMP's SIMD directives. |
6d7f7e0a | 1496 | |
fef3106c NB |
1497 | foperator-names |
1498 | C++ ObjC++ | |
a7b2e184 | 1499 | Recognize C++ keywords like \"compl\" and \"xor\". |
fef3106c NB |
1500 | |
1501 | foptional-diags | |
2d2bd949 | 1502 | C++ ObjC++ Ignore |
5498f011 | 1503 | Does nothing. Preserved for backward compatibility. |
fef3106c NB |
1504 | |
1505 | fpch-deps | |
1506 | C ObjC C++ ObjC++ | |
1507 | ||
c0d578e6 GK |
1508 | fpch-preprocess |
1509 | C ObjC C++ ObjC++ | |
a7b2e184 | 1510 | Look for and use PCH files even when preprocessing. |
c0d578e6 | 1511 | |
fef3106c | 1512 | fpermissive |
0c3641b0 | 1513 | C++ ObjC++ Var(flag_permissive) |
a7b2e184 | 1514 | Downgrade conformance errors to warnings. |
fef3106c | 1515 | |
478a1c5b ILT |
1516 | fplan9-extensions |
1517 | C ObjC Var(flag_plan9_extensions) | |
a7b2e184 | 1518 | Enable Plan 9 language extensions. |
478a1c5b | 1519 | |
fef3106c NB |
1520 | fpreprocessed |
1521 | C ObjC C++ ObjC++ | |
a7b2e184 | 1522 | Treat the input file as already preprocessed. |
fef3106c | 1523 | |
92582b75 TT |
1524 | ftrack-macro-expansion |
1525 | C ObjC C++ ObjC++ JoinedOrMissing RejectNegative UInteger | |
1526 | ; converted into ftrack-macro-expansion= | |
1527 | ||
1528 | ftrack-macro-expansion= | |
1529 | C ObjC C++ ObjC++ JoinedOrMissing RejectNegative UInteger | |
a7b2e184 | 1530 | -ftrack-macro-expansion=<0|1|2> Track locations of tokens coming from macro expansion and display them in error messages. |
92582b75 | 1531 | |
6ea2bd47 | 1532 | fpretty-templates |
5498f011 | 1533 | C++ ObjC++ Var(flag_pretty_templates) Init(1) |
a7b2e184 | 1534 | -fno-pretty-templates Do not pretty-print template specializations as the template signature followed by the arguments. |
6ea2bd47 | 1535 | |
88d0c3f0 | 1536 | fprintf-return-value |
d43b4ccc | 1537 | C ObjC C++ ObjC++ LTO Optimization Var(flag_printf_return_value) Init(0) |
88d0c3f0 MS |
1538 | Treat known sprintf return values as constants. |
1539 | ||
264fa2db | 1540 | freplace-objc-classes |
fb5610fb | 1541 | ObjC ObjC++ LTO Var(flag_replace_objc_classes) |
a7b2e184 | 1542 | Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime. |
264fa2db | 1543 | |
fef3106c NB |
1544 | frepo |
1545 | C++ ObjC++ | |
a7b2e184 | 1546 | Enable automatic template instantiation. |
fef3106c NB |
1547 | |
1548 | frtti | |
5498f011 | 1549 | C++ ObjC++ Optimization Var(flag_rtti) Init(1) |
a7b2e184 | 1550 | Generate run time type descriptor information. |
fef3106c | 1551 | |
fef3106c | 1552 | fshort-enums |
dd6fe7d4 | 1553 | C ObjC C++ ObjC++ LTO Optimization Var(flag_short_enums) |
a7b2e184 | 1554 | Use the narrowest integer type possible for enumeration types. |
fef3106c NB |
1555 | |
1556 | fshort-wchar | |
dd6fe7d4 | 1557 | C ObjC C++ ObjC++ LTO Optimization Var(flag_short_wchar) |
a7b2e184 | 1558 | Force the underlying type for \"wchar_t\" to be \"unsigned short\". |
fef3106c | 1559 | |
fef3106c | 1560 | fsigned-bitfields |
5498f011 | 1561 | C ObjC C++ ObjC++ Var(flag_signed_bitfields) Init(1) |
a7b2e184 | 1562 | When \"signed\" or \"unsigned\" is not given make the bitfield signed. |
fef3106c NB |
1563 | |
1564 | fsigned-char | |
5498f011 | 1565 | C ObjC C++ ObjC++ LTO Var(flag_signed_char) |
a7b2e184 | 1566 | Make \"char\" signed by default. |
fef3106c | 1567 | |
20b06add JM |
1568 | fsized-deallocation |
1569 | C++ ObjC++ Var(flag_sized_deallocation) Init(-1) | |
a7b2e184 | 1570 | Enable C++14 sized deallocation support. |
20b06add | 1571 | |
fef3106c | 1572 | fsquangle |
2d2bd949 | 1573 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1574 | |
ee45a32d EB |
1575 | fsso-struct= |
1576 | C ObjC Joined Enum(sso_struct) Var(default_sso) Init(SSO_NATIVE) | |
1577 | -fsso-struct=[big-endian|little-endian] Set the default scalar storage order. | |
1578 | ||
1579 | Enum | |
1580 | Name(sso_struct) Type(enum scalar_storage_order_kind) UnknownError(unrecognized scalar storage order value %qs) | |
1581 | ||
1582 | EnumValue | |
1583 | Enum(sso_struct) String(big-endian) Value(SSO_BIG_ENDIAN) | |
1584 | ||
1585 | EnumValue | |
1586 | Enum(sso_struct) String(little-endian) Value(SSO_LITTLE_ENDIAN) | |
1587 | ||
fef3106c | 1588 | fstats |
5498f011 | 1589 | C++ ObjC++ Var(flag_detailed_statistics) |
a7b2e184 | 1590 | Display statistics accumulated during compilation. |
fef3106c | 1591 | |
cbb4feb3 JM |
1592 | fstrict-enums |
1593 | C++ ObjC++ Optimization Var(flag_strict_enums) | |
a7b2e184 | 1594 | Assume that values of enumeration type are always within the minimum range of that type. |
cbb4feb3 | 1595 | |
fef3106c | 1596 | fstrict-prototype |
2d2bd949 | 1597 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1598 | |
d0cf395a JM |
1599 | fstrong-eval-order |
1600 | C++ ObjC++ Common Alias(fstrong-eval-order=, all, none) | |
1601 | Follow the C++17 evaluation order requirements for assignment expressions, | |
1602 | shift, member function calls, etc. | |
1603 | ||
1604 | fstrong-eval-order= | |
1605 | C++ ObjC++ Common Var(flag_strong_eval_order) Joined Enum(strong_eval_order) Init(-1) | |
1606 | Follow the C++17 evaluation order requirements for assignment expressions, | |
1607 | shift, member function calls, etc. | |
1608 | ||
1609 | Enum | |
1610 | Name(strong_eval_order) Type(int) | |
1611 | ||
1612 | EnumValue | |
1613 | Enum(strong_eval_order) String(none) Value(0) | |
1614 | ||
1615 | EnumValue | |
1616 | Enum(strong_eval_order) String(some) Value(1) | |
1617 | ||
1618 | EnumValue | |
1619 | Enum(strong_eval_order) String(all) Value(2) | |
1620 | ||
fef3106c | 1621 | ftabstop= |
7b086b11 | 1622 | C ObjC C++ ObjC++ Joined RejectNegative UInteger |
a7b2e184 | 1623 | -ftabstop=<number> Distance between tab stops for column reporting. |
fef3106c | 1624 | |
a12bf402 MLI |
1625 | ftemplate-backtrace-limit= |
1626 | C++ ObjC++ Joined RejectNegative UInteger Var(template_backtrace_limit) Init(10) | |
a7b2e184 | 1627 | Set the maximum number of template instantiation notes for a single warning or error. |
a12bf402 | 1628 | |
fef3106c | 1629 | ftemplate-depth- |
5de8299c | 1630 | C++ ObjC++ Joined RejectNegative Undocumented Alias(ftemplate-depth=) |
124e0d27 MLI |
1631 | |
1632 | ftemplate-depth= | |
c22cacf3 | 1633 | C++ ObjC++ Joined RejectNegative UInteger |
a7b2e184 | 1634 | -ftemplate-depth=<number> Specify maximum template instantiation depth. |
fef3106c NB |
1635 | |
1636 | fthis-is-variable | |
2d2bd949 | 1637 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
fef3106c | 1638 | |
40aac948 | 1639 | fthreadsafe-statics |
5498f011 | 1640 | C++ ObjC++ Optimization Var(flag_threadsafe_statics) Init(1) |
a7b2e184 | 1641 | -fno-threadsafe-statics Do not generate thread-safe code for initializing local statics. |
40aac948 | 1642 | |
fef3106c | 1643 | funsigned-bitfields |
f0036cca | 1644 | C ObjC C++ ObjC++ Var(flag_signed_bitfields, 0) |
a7b2e184 | 1645 | When \"signed\" or \"unsigned\" is not given make the bitfield unsigned. |
fef3106c NB |
1646 | |
1647 | funsigned-char | |
f0036cca | 1648 | C ObjC C++ ObjC++ LTO Var(flag_signed_char, 0) |
a7b2e184 | 1649 | Make \"char\" unsigned by default. |
fef3106c NB |
1650 | |
1651 | fuse-cxa-atexit | |
5498f011 | 1652 | C++ ObjC++ Var(flag_use_cxa_atexit) Init(DEFAULT_USE_CXA_ATEXIT) |
a7b2e184 | 1653 | Use __cxa_atexit to register destructors. |
fef3106c | 1654 | |
c7b5e395 | 1655 | fuse-cxa-get-exception-ptr |
5498f011 | 1656 | C++ ObjC++ Var(flag_use_cxa_get_exception_ptr) Init(2) |
a7b2e184 | 1657 | Use __cxa_get_exception_ptr in exception handling. |
c7b5e395 | 1658 | |
d7afec4b | 1659 | fvisibility-inlines-hidden |
d0b07283 | 1660 | C++ ObjC++ |
a7b2e184 | 1661 | Marks all inlined functions and methods as having hidden visibility. |
d7afec4b | 1662 | |
ddbfd28d GK |
1663 | fvisibility-ms-compat |
1664 | C++ ObjC++ Var(flag_visibility_ms_compat) | |
a7b2e184 | 1665 | Changes visibility to match Microsoft Visual Studio by default. |
ddbfd28d | 1666 | |
fef3106c | 1667 | fvtable-gc |
2d2bd949 | 1668 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
a7b2e184 | 1669 | No longer supported. |
fef3106c NB |
1670 | |
1671 | fvtable-thunks | |
2d2bd949 | 1672 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
a7b2e184 | 1673 | No longer supported. |
fef3106c NB |
1674 | |
1675 | fweak | |
5498f011 | 1676 | C++ ObjC++ Var(flag_weak) Init(1) |
a7b2e184 | 1677 | Emit common-like symbols as weak symbols. |
fef3106c | 1678 | |
e6cc3a24 ZW |
1679 | fwide-exec-charset= |
1680 | C ObjC C++ ObjC++ Joined RejectNegative | |
a7b2e184 | 1681 | -fwide-exec-charset=<cset> Convert all wide strings and character constants to character set <cset>. |
e6cc3a24 | 1682 | |
b20d9f0c | 1683 | fworking-directory |
5498f011 | 1684 | C ObjC C++ ObjC++ Var(flag_working_directory) Init(-1) |
a7b2e184 | 1685 | Generate a #line directive pointing at the current working directory. |
b20d9f0c | 1686 | |
fef3106c | 1687 | fxref |
2d2bd949 | 1688 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
a7b2e184 | 1689 | No longer supported. |
fef3106c | 1690 | |
264fa2db | 1691 | fzero-link |
5498f011 | 1692 | ObjC ObjC++ Var(flag_zero_link) |
a7b2e184 | 1693 | Generate lazy class lookup (via objc_getClass()) for use in Zero-Link mode. |
264fa2db | 1694 | |
fef3106c | 1695 | gen-decls |
5498f011 | 1696 | ObjC ObjC++ Var(flag_gen_declaration) |
a7b2e184 | 1697 | Dump declarations to a .decl file. |
fef3106c | 1698 | |
39ef6592 LC |
1699 | femit-struct-debug-baseonly |
1700 | C ObjC C++ ObjC++ | |
a7b2e184 | 1701 | -femit-struct-debug-baseonly Aggressive reduced debug info for structs. |
39ef6592 LC |
1702 | |
1703 | femit-struct-debug-reduced | |
1704 | C ObjC C++ ObjC++ | |
a7b2e184 | 1705 | -femit-struct-debug-reduced Conservative reduced debug info for structs. |
39ef6592 LC |
1706 | |
1707 | femit-struct-debug-detailed= | |
1708 | C ObjC C++ ObjC++ Joined | |
a7b2e184 | 1709 | -femit-struct-debug-detailed=<spec-list> Detailed reduced debug info for structs. |
39ef6592 | 1710 | |
a4a0016d | 1711 | fext-numeric-literals |
dcb466ec | 1712 | C++ ObjC++ Var(flag_ext_numeric_literals) Init(1) |
a4a0016d ESR |
1713 | Interpret imaginary, fixed-point, or other gnu number suffix as the corresponding |
1714 | number literal rather than a user-defined number literal. | |
1715 | ||
fef3106c | 1716 | idirafter |
61ff2bdc | 1717 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 1718 | -idirafter <dir> Add <dir> to the end of the system include path. |
fef3106c NB |
1719 | |
1720 | imacros | |
61ff2bdc | 1721 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing filename after %qs) |
a7b2e184 | 1722 | -imacros <file> Accept definition of macros in <file>. |
fef3106c | 1723 | |
2b6dd222 JM |
1724 | imultilib |
1725 | C ObjC C++ ObjC++ Joined Separate | |
a7b2e184 | 1726 | -imultilib <dir> Set <dir> to be the multilib include subdirectory. |
2b6dd222 | 1727 | |
fef3106c | 1728 | include |
61ff2bdc | 1729 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing filename after %qs) |
a7b2e184 | 1730 | -include <file> Include the contents of <file> before other files. |
fef3106c NB |
1731 | |
1732 | iprefix | |
1733 | C ObjC C++ ObjC++ Joined Separate | |
a7b2e184 | 1734 | -iprefix <path> Specify <path> as a prefix for next two options. |
fef3106c NB |
1735 | |
1736 | isysroot | |
61ff2bdc | 1737 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 1738 | -isysroot <dir> Set <dir> to be the system root directory. |
fef3106c NB |
1739 | |
1740 | isystem | |
61ff2bdc | 1741 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 1742 | -isystem <dir> Add <dir> to the start of the system include path. |
fef3106c | 1743 | |
4bed3787 | 1744 | iquote |
61ff2bdc | 1745 | C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) |
a7b2e184 | 1746 | -iquote <dir> Add <dir> to the end of the quote include path. |
4bed3787 | 1747 | |
fef3106c NB |
1748 | iwithprefix |
1749 | C ObjC C++ ObjC++ Joined Separate | |
a7b2e184 | 1750 | -iwithprefix <dir> Add <dir> to the end of the system include path. |
fef3106c NB |
1751 | |
1752 | iwithprefixbefore | |
1753 | C ObjC C++ ObjC++ Joined Separate | |
a7b2e184 | 1754 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path. |
fef3106c NB |
1755 | |
1756 | lang-asm | |
603349bf | 1757 | C Undocumented RejectDriver |
fef3106c | 1758 | |
e200444e JM |
1759 | no-integrated-cpp |
1760 | Driver | |
1761 | ||
fef3106c NB |
1762 | nostdinc |
1763 | C ObjC C++ ObjC++ | |
a7b2e184 | 1764 | Do not search standard system include directories (those specified with -isystem will still be used). |
fef3106c NB |
1765 | |
1766 | nostdinc++ | |
72de27ea | 1767 | C++ ObjC++ |
a7b2e184 | 1768 | Do not search standard system include directories for C++. |
fef3106c NB |
1769 | |
1770 | o | |
1771 | C ObjC C++ ObjC++ Joined Separate | |
72de27ea | 1772 | ; Documented in common.opt |
fef3106c NB |
1773 | |
1774 | pedantic | |
c1771a20 | 1775 | C ObjC C++ ObjC++ Alias(Wpedantic) |
72de27ea | 1776 | ; Documented in common.opt |
fef3106c | 1777 | |
fef3106c NB |
1778 | print-objc-runtime-info |
1779 | ObjC ObjC++ | |
a7b2e184 | 1780 | Generate C header of platform-specific features. |
fef3106c NB |
1781 | |
1782 | remap | |
1783 | C ObjC C++ ObjC++ | |
a7b2e184 | 1784 | Remap file names when including files. |
fef3106c NB |
1785 | |
1786 | std=c++98 | |
1787 | C++ ObjC++ | |
a7b2e184 | 1788 | Conform to the ISO 1998 C++ standard revised by the 2003 technical corrigendum. |
c7dc8804 JM |
1789 | |
1790 | std=c++03 | |
1791 | C++ ObjC++ Alias(std=c++98) | |
a7b2e184 | 1792 | Conform to the ISO 1998 C++ standard revised by the 2003 technical corrigendum. |
fef3106c | 1793 | |
97e3ad20 | 1794 | std=c++11 |
966541e3 | 1795 | C++ ObjC++ |
a7b2e184 | 1796 | Conform to the ISO 2011 C++ standard. |
97e3ad20 JM |
1797 | |
1798 | std=c++0x | |
70e24808 | 1799 | C++ ObjC++ Alias(std=c++11) Undocumented |
a7b2e184 | 1800 | Deprecated in favor of -std=c++11. |
966541e3 | 1801 | |
552b8185 | 1802 | std=c++1y |
028aee17 | 1803 | C++ ObjC++ Alias(std=c++14) Undocumented |
a7b2e184 | 1804 | Deprecated in favor of -std=c++14. |
70e24808 JM |
1805 | |
1806 | std=c++14 | |
381bf11e | 1807 | C++ ObjC++ |
a7b2e184 | 1808 | Conform to the ISO 2014 C++ standard. |
552b8185 | 1809 | |
da73100b JM |
1810 | std=c++1z |
1811 | C++ ObjC++ | |
a7b2e184 | 1812 | Conform to the ISO 2017(?) C++ draft standard (experimental and incomplete support). |
da73100b JM |
1813 | |
1814 | std=c++17 | |
1815 | C++ ObjC++ Alias(std=c++1z) Undocumented | |
1816 | ||
48b0b196 | 1817 | std=c11 |
2778d766 | 1818 | C ObjC |
a7b2e184 | 1819 | Conform to the ISO 2011 C standard. |
48b0b196 JM |
1820 | |
1821 | std=c1x | |
1822 | C ObjC Alias(std=c11) | |
a7b2e184 | 1823 | Deprecated in favor of -std=c11. |
2778d766 | 1824 | |
fef3106c | 1825 | std=c89 |
5de8299c | 1826 | C ObjC Alias(std=c90) |
a7b2e184 | 1827 | Conform to the ISO 1990 C standard. |
fef3106c | 1828 | |
7e1542b9 MLI |
1829 | std=c90 |
1830 | C ObjC | |
a7b2e184 | 1831 | Conform to the ISO 1990 C standard. |
7e1542b9 | 1832 | |
fef3106c NB |
1833 | std=c99 |
1834 | C ObjC | |
a7b2e184 | 1835 | Conform to the ISO 1999 C standard. |
fef3106c NB |
1836 | |
1837 | std=c9x | |
5de8299c | 1838 | C ObjC Alias(std=c99) |
a7b2e184 | 1839 | Deprecated in favor of -std=c99. |
fef3106c NB |
1840 | |
1841 | std=gnu++98 | |
1842 | C++ ObjC++ | |
97e3ad20 | 1843 | Conform to the ISO 1998 C++ standard revised by the 2003 technical |
a7b2e184 | 1844 | corrigendum with GNU extensions. |
fef3106c | 1845 | |
97e3ad20 JM |
1846 | std=gnu++03 |
1847 | C++ ObjC++ Alias(std=gnu++98) | |
1848 | Conform to the ISO 1998 C++ standard revised by the 2003 technical | |
a7b2e184 | 1849 | corrigendum with GNU extensions. |
97e3ad20 JM |
1850 | |
1851 | std=gnu++11 | |
966541e3 | 1852 | C++ ObjC++ |
a7b2e184 | 1853 | Conform to the ISO 2011 C++ standard with GNU extensions. |
97e3ad20 JM |
1854 | |
1855 | std=gnu++0x | |
381bf11e | 1856 | C++ ObjC++ Alias(std=gnu++11) Undocumented |
a7b2e184 | 1857 | Deprecated in favor of -std=gnu++11. |
966541e3 | 1858 | |
552b8185 | 1859 | std=gnu++1y |
028aee17 | 1860 | C++ ObjC++ Alias(std=gnu++14) Undocumented |
a7b2e184 | 1861 | Deprecated in favor of -std=gnu++14. |
552b8185 | 1862 | |
a07f6ed2 | 1863 | std=gnu++14 |
028aee17 | 1864 | C++ ObjC++ |
a7b2e184 | 1865 | Conform to the ISO 2014 C++ standard with GNU extensions. |
a07f6ed2 | 1866 | |
da73100b JM |
1867 | std=gnu++1z |
1868 | C++ ObjC++ | |
a7b2e184 | 1869 | Conform to the ISO 201z(7?) C++ draft standard with GNU extensions (experimental and incomplete support). |
da73100b JM |
1870 | |
1871 | std=gnu++17 | |
a545cacd | 1872 | C++ ObjC++ Alias(std=gnu++1z) Undocumented |
da73100b | 1873 | |
48b0b196 | 1874 | std=gnu11 |
2778d766 | 1875 | C ObjC |
a7b2e184 | 1876 | Conform to the ISO 2011 C standard with GNU extensions. |
48b0b196 JM |
1877 | |
1878 | std=gnu1x | |
1879 | C ObjC Alias(std=gnu11) | |
a7b2e184 | 1880 | Deprecated in favor of -std=gnu11. |
2778d766 | 1881 | |
fef3106c | 1882 | std=gnu89 |
5de8299c | 1883 | C ObjC Alias(std=gnu90) |
a7b2e184 | 1884 | Conform to the ISO 1990 C standard with GNU extensions. |
fef3106c | 1885 | |
7e1542b9 MLI |
1886 | std=gnu90 |
1887 | C ObjC | |
a7b2e184 | 1888 | Conform to the ISO 1990 C standard with GNU extensions. |
7e1542b9 | 1889 | |
fef3106c NB |
1890 | std=gnu99 |
1891 | C ObjC | |
a7b2e184 | 1892 | Conform to the ISO 1999 C standard with GNU extensions. |
fef3106c NB |
1893 | |
1894 | std=gnu9x | |
5de8299c | 1895 | C ObjC Alias(std=gnu99) |
a7b2e184 | 1896 | Deprecated in favor of -std=gnu99. |
fef3106c NB |
1897 | |
1898 | std=iso9899:1990 | |
5de8299c | 1899 | C ObjC Alias(std=c90) |
a7b2e184 | 1900 | Conform to the ISO 1990 C standard. |
fef3106c NB |
1901 | |
1902 | std=iso9899:199409 | |
1903 | C ObjC | |
a7b2e184 | 1904 | Conform to the ISO 1990 C standard as amended in 1994. |
fef3106c NB |
1905 | |
1906 | std=iso9899:1999 | |
5de8299c | 1907 | C ObjC Alias(std=c99) |
a7b2e184 | 1908 | Conform to the ISO 1999 C standard. |
fef3106c NB |
1909 | |
1910 | std=iso9899:199x | |
5de8299c | 1911 | C ObjC Alias(std=c99) |
a7b2e184 | 1912 | Deprecated in favor of -std=iso9899:1999. |
fef3106c | 1913 | |
48b0b196 JM |
1914 | std=iso9899:2011 |
1915 | C ObjC Alias(std=c11) | |
a7b2e184 | 1916 | Conform to the ISO 2011 C standard. |
48b0b196 | 1917 | |
e200444e JM |
1918 | traditional |
1919 | Driver | |
1920 | ||
fef3106c NB |
1921 | traditional-cpp |
1922 | C ObjC C++ ObjC++ | |
a7b2e184 | 1923 | Enable traditional preprocessing. |
fef3106c NB |
1924 | |
1925 | trigraphs | |
1926 | C ObjC C++ ObjC++ | |
a7b2e184 | 1927 | -trigraphs Support ISO C trigraphs. |
fef3106c NB |
1928 | |
1929 | undef | |
5498f011 | 1930 | C ObjC C++ ObjC++ Var(flag_undef) |
a7b2e184 | 1931 | Do not predefine system-specific and GCC-specific macros. |
fef3106c NB |
1932 | |
1933 | v | |
d5478783 JM |
1934 | C ObjC C++ ObjC++ |
1935 | ; Documented in common.opt | |
fef3106c NB |
1936 | |
1937 | w | |
1938 | C ObjC C++ ObjC++ | |
72de27ea | 1939 | ; Documented in common.opt |
e11a4ae5 NB |
1940 | |
1941 | ; This comment is to ensure we retain the blank line above. |