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d9b950dd 1/* A self-testing framework, for use by -fself-test.
a5544970 2 Copyright (C) 2015-2019 Free Software Foundation, Inc.
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3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#ifndef GCC_SELFTEST_H
21#define GCC_SELFTEST_H
22
23/* The selftest code should entirely disappear in a production
24 configuration, hence we guard all of it with #if CHECKING_P. */
25
26#if CHECKING_P
27
28namespace selftest {
29
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30/* A struct describing the source-location of a selftest, to make it
31 easier to track down failing tests. */
32
33struct location
34{
35 location (const char *file, int line, const char *function)
36 : m_file (file), m_line (line), m_function (function) {}
37
38 const char *m_file;
39 int m_line;
40 const char *m_function;
41};
42
43/* A macro for use in selftests and by the ASSERT_ macros below,
44 constructing a selftest::location for the current source location. */
45
46#define SELFTEST_LOCATION \
47 (::selftest::location (__FILE__, __LINE__, __FUNCTION__))
48
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49/* The entrypoint for running all tests. */
50
51extern void run_tests ();
52
53/* Record the successful outcome of some aspect of the test. */
54
09765e3a 55extern void pass (const location &loc, const char *msg);
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56
57/* Report the failed outcome of some aspect of the test and abort. */
58
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59extern void fail (const location &loc, const char *msg)
60 ATTRIBUTE_NORETURN;
d9b950dd 61
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62/* As "fail", but using printf-style formatted output. */
63
09765e3a 64extern void fail_formatted (const location &loc, const char *fmt, ...)
6ac852d1 65 ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
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66
67/* Implementation detail of ASSERT_STREQ. */
68
09765e3a 69extern void assert_streq (const location &loc,
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70 const char *desc_val1, const char *desc_val2,
71 const char *val1, const char *val2);
755fa666 72
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73/* Implementation detail of ASSERT_STR_CONTAINS. */
74
75extern void assert_str_contains (const location &loc,
76 const char *desc_haystack,
77 const char *desc_needle,
78 const char *val_haystack,
79 const char *val_needle);
80
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81/* Implementation detail of ASSERT_STR_STARTSWITH. */
82
83extern void assert_str_startswith (const location &loc,
84 const char *desc_str,
85 const char *desc_prefix,
86 const char *val_str,
87 const char *val_prefix);
88
89
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90/* A named temporary file for use in selftests.
91 Usable for writing out files, and as the base class for
92 temp_source_file.
93 The file is unlinked in the destructor. */
eb3a5bcc 94
4ecfc453 95class named_temp_file
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96{
97 public:
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98 named_temp_file (const char *suffix);
99 ~named_temp_file ();
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100 const char *get_filename () const { return m_filename; }
101
102 private:
103 char *m_filename;
104};
105
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106/* A class for writing out a temporary sourcefile for use in selftests
107 of input handling. */
108
109class temp_source_file : public named_temp_file
110{
111 public:
112 temp_source_file (const location &loc, const char *suffix,
113 const char *content);
114};
115
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116/* RAII-style class for avoiding introducing locale-specific differences
117 in strings containing localized quote marks, by temporarily overriding
118 the "open_quote" and "close_quote" globals to something hardcoded.
119
120 Specifically, the C locale's values are used:
121 - open_quote becomes "`"
122 - close_quote becomes "'"
123 for the lifetime of the object. */
124
125class auto_fix_quotes
126{
127 public:
128 auto_fix_quotes ();
129 ~auto_fix_quotes ();
130
131 private:
132 const char *m_saved_open_quote;
133 const char *m_saved_close_quote;
134};
135
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136/* Various selftests involving location-handling require constructing a
137 line table and one or more line maps within it.
138
139 For maximum test coverage we want to run these tests with a variety
140 of situations:
141 - line_table->default_range_bits: some frontends use a non-zero value
142 and others use zero
143 - the fallback modes within line-map.c: there are various threshold
620e594b 144 values for location_t beyond line-map.c changes
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145 behavior (disabling of the range-packing optimization, disabling
146 of column-tracking). We can exercise these by starting the line_table
147 at interesting values at or near these thresholds.
148
149 The following struct describes a particular case within our test
150 matrix. */
151
152struct line_table_case;
153
154/* A class for overriding the global "line_table" within a selftest,
155 restoring its value afterwards. At most one instance of this
156 class can exist at once, due to the need to keep the old value
157 of line_table as a GC root. */
158
159class line_table_test
160{
161 public:
162 /* Default constructor. Override "line_table", using sane defaults
163 for the temporary line_table. */
164 line_table_test ();
165
166 /* Constructor. Override "line_table", using the case described by C. */
167 line_table_test (const line_table_case &c);
168
169 /* Destructor. Restore the saved line_table. */
170 ~line_table_test ();
171};
172
173/* Run TESTCASE multiple times, once for each case in our test matrix. */
174
175extern void
176for_each_line_table_case (void (*testcase) (const line_table_case &));
177
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178/* Read the contents of PATH into memory, returning a 0-terminated buffer
179 that must be freed by the caller.
180 Fail (and abort) if there are any problems, with LOC as the reported
181 location of the failure. */
182
183extern char *read_file (const location &loc, const char *path);
184
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185/* A helper function for writing tests that interact with the
186 garbage collector. */
187
188extern void forcibly_ggc_collect ();
189
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190/* Convert a path relative to SRCDIR/gcc/testsuite/selftests
191 to a real path (either absolute, or relative to pwd).
192 The result should be freed by the caller. */
193
194extern char *locate_file (const char *path);
195
196/* The path of SRCDIR/testsuite/selftests. */
197
198extern const char *path_to_selftest_files;
199
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200/* selftest::test_runner is an implementation detail of selftest::run_tests,
201 exposed here to allow plugins to run their own suites of tests. */
202
203class test_runner
204{
205 public:
206 test_runner (const char *name);
207 ~test_runner ();
208
209 private:
210 const char *m_name;
211 long m_start_time;
212};
213
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214/* Declarations for specific families of tests (by source file), in
215 alphabetical order. */
5d9ae53d 216extern void attribute_c_tests ();
d9b950dd 217extern void bitmap_c_tests ();
212755ff 218extern void cgraph_c_tests ();
dfd7fdca 219extern void convert_c_tests ();
a93eac6a 220extern void diagnostic_c_tests ();
d9b950dd 221extern void diagnostic_show_locus_c_tests ();
4f5b9c80 222extern void dumpfile_c_tests ();
c65236d6 223extern void edit_context_c_tests ();
d9b950dd 224extern void et_forest_c_tests ();
ba1a7a0f 225extern void fibonacci_heap_c_tests ();
2099cb2d 226extern void fold_const_c_tests ();
d9b950dd 227extern void function_tests_c_tests ();
8c4294b2 228extern void ggc_tests_c_tests ();
2099cb2d 229extern void gimple_c_tests ();
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230extern void hash_map_tests_c_tests ();
231extern void hash_set_tests_c_tests ();
232extern void input_c_tests ();
4a4412b9 233extern void json_cc_tests ();
f4ebbd24 234extern void opt_problem_cc_tests ();
4a4412b9 235extern void optinfo_emit_json_cc_tests ();
2099cb2d 236extern void predict_c_tests ();
4ccab56d 237extern void pretty_print_c_tests ();
51b86113 238extern void read_rtl_function_c_tests ();
d9b950dd 239extern void rtl_tests_c_tests ();
2099cb2d 240extern void sbitmap_c_tests ();
5714dbda 241extern void selftest_c_tests ();
2099cb2d 242extern void simplify_rtx_c_tests ();
d9b950dd 243extern void spellcheck_c_tests ();
f254671f 244extern void spellcheck_tree_c_tests ();
dcbdb17a 245extern void sreal_c_tests ();
c22d8787 246extern void store_merging_c_tests ();
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247extern void tree_c_tests ();
248extern void tree_cfg_c_tests ();
2099cb2d 249extern void typed_splay_tree_c_tests ();
46d2b77d 250extern void unique_ptr_tests_cc_tests ();
d9b950dd 251extern void vec_c_tests ();
1a1c441d 252extern void vec_perm_indices_c_tests ();
2099cb2d 253extern void wide_int_cc_tests ();
d86c7648 254extern void opt_proposer_c_tests ();
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255
256extern int num_passes;
257
258} /* end of namespace selftest. */
259
260/* Macros for writing tests. */
261
262/* Evaluate EXPR and coerce to bool, calling
263 ::selftest::pass if it is true,
264 ::selftest::fail if it false. */
265
266#define ASSERT_TRUE(EXPR) \
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267 ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR))
268
269/* Like ASSERT_TRUE, but treat LOC as the effective location of the
270 selftest. */
271
272#define ASSERT_TRUE_AT(LOC, EXPR) \
d9b950dd 273 SELFTEST_BEGIN_STMT \
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274 const char *desc_ = "ASSERT_TRUE (" #EXPR ")"; \
275 bool actual_ = (EXPR); \
276 if (actual_) \
277 ::selftest::pass ((LOC), desc_); \
d9b950dd 278 else \
a0e7e36e 279 ::selftest::fail ((LOC), desc_); \
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280 SELFTEST_END_STMT
281
282/* Evaluate EXPR and coerce to bool, calling
283 ::selftest::pass if it is false,
284 ::selftest::fail if it true. */
285
286#define ASSERT_FALSE(EXPR) \
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287 ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR))
288
289/* Like ASSERT_FALSE, but treat LOC as the effective location of the
290 selftest. */
291
292#define ASSERT_FALSE_AT(LOC, EXPR) \
d9b950dd 293 SELFTEST_BEGIN_STMT \
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294 const char *desc_ = "ASSERT_FALSE (" #EXPR ")"; \
295 bool actual_ = (EXPR); \
296 if (actual_) \
297 ::selftest::fail ((LOC), desc_); \
298 else \
299 ::selftest::pass ((LOC), desc_); \
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300 SELFTEST_END_STMT
301
47ae164c 302/* Evaluate VAL1 and VAL2 and compare them with ==, calling
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303 ::selftest::pass if they are equal,
304 ::selftest::fail if they are non-equal. */
305
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306#define ASSERT_EQ(VAL1, VAL2) \
307 ASSERT_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
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308
309/* Like ASSERT_EQ, but treat LOC as the effective location of the
310 selftest. */
311
47ae164c 312#define ASSERT_EQ_AT(LOC, VAL1, VAL2) \
d9b950dd 313 SELFTEST_BEGIN_STMT \
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314 const char *desc_ = "ASSERT_EQ (" #VAL1 ", " #VAL2 ")"; \
315 if ((VAL1) == (VAL2)) \
a0e7e36e 316 ::selftest::pass ((LOC), desc_); \
d9b950dd 317 else \
a0e7e36e 318 ::selftest::fail ((LOC), desc_); \
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319 SELFTEST_END_STMT
320
47ae164c 321/* Evaluate VAL1 and VAL2 and compare them with known_eq, calling
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322 ::selftest::pass if they are always equal,
323 ::selftest::fail if they might be non-equal. */
324
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325#define ASSERT_KNOWN_EQ(VAL1, VAL2) \
326 ASSERT_KNOWN_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
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327
328/* Like ASSERT_KNOWN_EQ, but treat LOC as the effective location of the
329 selftest. */
330
47ae164c 331#define ASSERT_KNOWN_EQ_AT(LOC, VAL1, VAL2) \
e535b963 332 SELFTEST_BEGIN_STMT \
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333 const char *desc = "ASSERT_KNOWN_EQ (" #VAL1 ", " #VAL2 ")"; \
334 if (known_eq (VAL1, VAL2)) \
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335 ::selftest::pass ((LOC), desc); \
336 else \
337 ::selftest::fail ((LOC), desc); \
338 SELFTEST_END_STMT
339
47ae164c 340/* Evaluate VAL1 and VAL2 and compare them with !=, calling
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341 ::selftest::pass if they are non-equal,
342 ::selftest::fail if they are equal. */
343
47ae164c 344#define ASSERT_NE(VAL1, VAL2) \
d9b950dd 345 SELFTEST_BEGIN_STMT \
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346 const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
347 if ((VAL1) != (VAL2)) \
a0e7e36e 348 ::selftest::pass (SELFTEST_LOCATION, desc_); \
d9b950dd 349 else \
a0e7e36e 350 ::selftest::fail (SELFTEST_LOCATION, desc_); \
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351 SELFTEST_END_STMT
352
47ae164c 353/* Evaluate VAL1 and VAL2 and compare them with maybe_ne, calling
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354 ::selftest::pass if they might be non-equal,
355 ::selftest::fail if they are known to be equal. */
356
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357#define ASSERT_MAYBE_NE(VAL1, VAL2) \
358 ASSERT_MAYBE_NE_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
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359
360/* Like ASSERT_MAYBE_NE, but treat LOC as the effective location of the
361 selftest. */
362
47ae164c 363#define ASSERT_MAYBE_NE_AT(LOC, VAL1, VAL2) \
e535b963 364 SELFTEST_BEGIN_STMT \
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365 const char *desc = "ASSERT_MAYBE_NE (" #VAL1 ", " #VAL2 ")"; \
366 if (maybe_ne (VAL1, VAL2)) \
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367 ::selftest::pass ((LOC), desc); \
368 else \
369 ::selftest::fail ((LOC), desc); \
370 SELFTEST_END_STMT
371
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372/* Evaluate LHS and RHS and compare them with >, calling
373 ::selftest::pass if LHS > RHS,
374 ::selftest::fail otherwise. */
375
376#define ASSERT_GT(LHS, RHS) \
377 ASSERT_GT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
378
379/* Like ASSERT_GT, but treat LOC as the effective location of the
380 selftest. */
381
382#define ASSERT_GT_AT(LOC, LHS, RHS) \
383 SELFTEST_BEGIN_STMT \
384 const char *desc_ = "ASSERT_GT (" #LHS ", " #RHS ")"; \
385 if ((LHS) > (RHS)) \
386 ::selftest::pass ((LOC), desc_); \
387 else \
388 ::selftest::fail ((LOC), desc_); \
389 SELFTEST_END_STMT
390
391/* Evaluate LHS and RHS and compare them with <, calling
392 ::selftest::pass if LHS < RHS,
393 ::selftest::fail otherwise. */
394
395#define ASSERT_LT(LHS, RHS) \
396 ASSERT_LT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
397
398/* Like ASSERT_LT, but treat LOC as the effective location of the
399 selftest. */
400
401#define ASSERT_LT_AT(LOC, LHS, RHS) \
402 SELFTEST_BEGIN_STMT \
403 const char *desc_ = "ASSERT_LT (" #LHS ", " #RHS ")"; \
404 if ((LHS) < (RHS)) \
405 ::selftest::pass ((LOC), desc_); \
406 else \
407 ::selftest::fail ((LOC), desc_); \
408 SELFTEST_END_STMT
409
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410/* Evaluate VAL1 and VAL2 and compare them with strcmp, calling
411 ::selftest::pass if they are equal (and both are non-NULL),
412 ::selftest::fail if they are non-equal, or are both NULL. */
d9b950dd 413
47ae164c 414#define ASSERT_STREQ(VAL1, VAL2) \
755fa666 415 SELFTEST_BEGIN_STMT \
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416 ::selftest::assert_streq (SELFTEST_LOCATION, #VAL1, #VAL2, \
417 (VAL1), (VAL2)); \
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418 SELFTEST_END_STMT
419
d4f7837c 420/* Like ASSERT_STREQ, but treat LOC as the effective location of the
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421 selftest. */
422
47ae164c 423#define ASSERT_STREQ_AT(LOC, VAL1, VAL2) \
09765e3a 424 SELFTEST_BEGIN_STMT \
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425 ::selftest::assert_streq ((LOC), #VAL1, #VAL2, \
426 (VAL1), (VAL2)); \
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427 SELFTEST_END_STMT
428
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429/* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE
430 is within HAYSTACK.
431 ::selftest::pass if NEEDLE is found.
432 ::selftest::fail if it is not found. */
433
434#define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \
435 SELFTEST_BEGIN_STMT \
436 ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \
437 (HAYSTACK), (NEEDLE)); \
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438 SELFTEST_END_STMT
439
440/* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
441 selftest. */
442
443#define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE) \
444 SELFTEST_BEGIN_STMT \
445 ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE, \
446 (HAYSTACK), (NEEDLE)); \
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447 SELFTEST_END_STMT
448
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449/* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
450 ::selftest::pass if STR does start with PREFIX.
451 ::selftest::fail if does not, or either is NULL. */
452
453#define ASSERT_STR_STARTSWITH(STR, PREFIX) \
454 SELFTEST_BEGIN_STMT \
455 ::selftest::assert_str_startswith (SELFTEST_LOCATION, #STR, #PREFIX, \
456 (STR), (PREFIX)); \
457 SELFTEST_END_STMT
458
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459/* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true,
460 ::selftest::fail if it is false. */
461
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462#define ASSERT_PRED1(PRED1, VAL1) \
463 SELFTEST_BEGIN_STMT \
464 const char *desc_ = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
465 bool actual_ = (PRED1) (VAL1); \
466 if (actual_) \
467 ::selftest::pass (SELFTEST_LOCATION, desc_); \
468 else \
469 ::selftest::fail (SELFTEST_LOCATION, desc_); \
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470 SELFTEST_END_STMT
471
472#define SELFTEST_BEGIN_STMT do {
473#define SELFTEST_END_STMT } while (0)
474
475#endif /* #if CHECKING_P */
476
477#endif /* GCC_SELFTEST_H */