gdb/testsuite/gdb.rust/simple.exp

   1 # Copyright (C) 2016-2022 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Test expression parsing and evaluation that requires Rust compiler.
  17
  18 load_lib rust-support.exp
  19 if {[skip_rust_tests]} {
  20     continue
  21 }
  22
  23 standard_testfile .rs
  24 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug rust}]} {
  25     return -1
  26 }
  27
  28 set line [gdb_get_line_number "set breakpoint here"]
  29 if {![runto ${srcfile}:$line]} {
  30     untested "could not run to breakpoint"
  31     return -1
  32 }
  33
  34 gdb_test "print a" " = \\(\\)"
  35 gdb_test "ptype a" " = \\(\\)"
  36 gdb_test "print sizeof(a)" " = 0"
  37
  38 gdb_test "print b" " = \\\[\\\]"
  39 gdb_test "ptype b" " = \\\[i32; 0\\\]"
  40 gdb_test "print *(&b as *const \[i32; 0\])" " = \\\[\\\]"
  41 gdb_test "print *(&b as *const \[i32; 0_0\])" " = \\\[\\\]"
  42
  43 gdb_test "print c" " = 99"
  44 gdb_test "ptype c" " = i32"
  45 gdb_test "print sizeof(c)" " = 4"
  46
  47 gdb_test "print c = 87" " = \\(\\)"
  48 gdb_test "print c" " = 87" "print after assignment"
  49 gdb_test "print c += 3" " = \\(\\)"
  50 gdb_test "print c" " = 90" "print after plus assignment"
  51 gdb_test "print c -= 90" " = \\(\\)"
  52 gdb_test "print c" " = 0" "print after minus assignment"
  53 gdb_test "print *&c" " = 0"
  54 gdb_test "print *(&c as &i32)" " = 0"
  55 gdb_test "print *(&c as *const i32)" " = 0"
  56 gdb_test "print *(&c as *mut i32)" " = 0"
  57 gdb_test "ptype &c as *mut i32" "\\*mut i32"
  58
  59 gdb_test "print/c f\[0\]" " = 104 'h'"
  60
  61 gdb_test "print j" " = simple::Unit"
  62 gdb_test "ptype j" " = struct simple::Unit"
  63 gdb_test "print j2" " = simple::Unit"
  64 gdb_test "ptype j2" " = struct simple::Unit"
  65 gdb_test "print simple::Unit" " = simple::Unit"
  66 gdb_test "print simple::Unit{}" " = simple::Unit"
  67 gdb_test "print simple::Unit{23}" "'}', '\.\.', or identifier expected"
  68
  69 gdb_test "print f" " = \"hi bob\""
  70 gdb_test "print fslice" " = \"bob\""
  71 gdb_test "print &f\[3..\]" " = \"bob\""
  72
  73 gdb_test "print g" " = \\(\\*mut \\\[u8; 6\\\]\\) $hex b\"hi bob\""
  74 gdb_test "ptype g" " = \\*mut \\\[u8; 6\\\]"
  75
  76 gdb_test "print v" " = simple::Something::Three"
  77 gdb_test_sequence "ptype v" "" {
  78     " = enum simple::Something \\{"
  79     "  One,"
  80     "  Two,"
  81     "  Three,"
  82     "\\}"
  83 }
  84
  85 gdb_test "print w" " = \\\[1, 2, 3, 4\\\]"
  86 gdb_test "ptype w" " = \\\[i32; 4\\\]"
  87 gdb_test "print w\[2\]" " = 3"
  88 gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
  89 gdb_test "print w_ptr\[2\]" " = 3"
  90 gdb_test "print fromslice" " = 3"
  91 gdb_test "print slice\[0\]" " = 3"
  92 gdb_test "print (slice as &\[i32\])\[0\]" " = 3"
  93
  94 gdb_test "print slice as \[i32; 73.9\]" "integer expected"
  95
  96 gdb_test_sequence "ptype slice" "" {
  97     " = struct &\\\[i32\\\] \\{"
  98     "  data_ptr: \\*mut i32,"
  99     "  length: usize,"
 100     "\\}"
 101 }
 102 gdb_test_sequence "ptype &slice\[..\]" "" {
 103     " = struct &\\\[i32\\\] \\{"
 104     "  data_ptr: \\*mut i32,"
 105     "  length: usize,"
 106     "\\}"
 107 }
 108 gdb_test_sequence "ptype &b\[..\]" "" {
 109     " = struct &\\\[\\*gdb\\*\\\] \\{"
 110     "  data_ptr: \\*mut i32,"
 111     "  length: usize,"
 112     "\\}"
 113 }
 114
 115 gdb_test "print x" " = \\(23, 25\\.5\\)"
 116 gdb_test "ptype x" " = \\(i32, f64\\)"
 117 gdb_test "print x as (i32,f64)" " = \\(23, 25\\.5\\)"
 118
 119 gdb_test "print y" " = simple::HiBob \\{field1: 7, field2: 8\\}"
 120 gdb_test_sequence "ptype y" "" {
 121     " = struct simple::HiBob \\{"
 122     "  field1: i32,"
 123     "  field2: u64,"
 124     "\\}"
 125 }
 126 gdb_test "print y.field2" " = 8"
 127
 128 gdb_test "print z" " = simple::ByeBob \\(7, 8\\)"
 129 gdb_test_sequence "ptype z" "" {
 130     " = struct simple::ByeBob \\("
 131     "  i32,"
 132     "  u64,"
 133     "\\)"
 134 }
 135 gdb_test "print z.1" " = 8"
 136
 137 # Some error checks.
 138 gdb_test "print z.1_0" \
 139     "'_' not allowed in integers in anonymous field references"
 140 gdb_test "print z.mut" "field name expected"
 141
 142 gdb_test "print univariant" " = simple::Univariant::Foo{a: 1}"
 143 gdb_test "print univariant.a" " = 1"
 144 gdb_test "print univariant_anon" " = simple::UnivariantAnon::Foo\\(1\\)"
 145 gdb_test "print univariant_anon.0" " = 1"
 146 gdb_test "print univariant_anon.sss" \
 147     "Attempting to access named field sss of tuple variant simple::UnivariantAnon::Foo, which has only anonymous fields"
 148
 149 gdb_test_sequence "ptype simple::Univariant" "" {
 150     "type = enum simple::Univariant \\{"
 151     "  Foo\\{a: u8\\},"
 152     "\\}"
 153 }
 154
 155 gdb_test_sequence "ptype simple::UnivariantAnon" "" {
 156     "type = enum simple::UnivariantAnon \\{"
 157     "  Foo\\(u8\\),"
 158     "\\}"
 159 }
 160
 161 gdb_test_sequence "ptype simple::ByeBob" "" {
 162     " = struct simple::ByeBob \\("
 163     "  i32,"
 164     "  u64,"
 165     "\\)"
 166 }
 167 gdb_test "print simple::ByeBob(0xff, 5)" \
 168     " = simple::ByeBob \\(255, 5\\)"
 169 gdb_test "print simple::ByeBob\{field1: 0xff, field2:5\}" \
 170     "Struct expression applied to non-struct type"
 171
 172 gdb_test "print simple::HiBob(0xff, 5)" \
 173     "Type simple::HiBob is not a tuple struct"
 174 gdb_test "print sizeof(simple::HiBob)" " = \[0-9\]+"
 175 gdb_test "print simple::HiBob + 5" \
 176     "Attempt to use a type name as an expression"
 177 gdb_test "print nosuchsymbol" \
 178     "No symbol 'nosuchsymbol' in current context"
 179
 180 gdb_test "print simple::HiBob{field1, field2}" \
 181     " = simple::HiBob \\{field1: 77, field2: 88\\}"
 182
 183 gdb_test "print simple::HiBob{field1: 99, .. y}" \
 184     " = simple::HiBob \\{field1: 99, field2: 8\\}"
 185
 186 gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
 187 gdb_test "print e2" \
 188     " = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
 189 gdb_test "print sizeof(e)" " = 24"
 190 gdb_test_sequence "ptype e" "" {
 191     " = enum simple::MoreComplicated \\{"
 192     "  One,"
 193     "  Two\\(i32\\),"
 194     "  Three\\(simple::HiBob\\),"
 195     "  Four\\{this: bool, is: u8, a: char, struct_: u64, variant: u32\\},"
 196     "\\}"
 197 }
 198
 199 # Test a parser error.
 200 gdb_test "print sizeof e" "'\\(' expected"
 201
 202 gdb_test "print e.0" " = 73"
 203 gdb_test "print e.1" \
 204     "Cannot access field 1 of variant simple::MoreComplicated::Two, there are only 1 fields"
 205 gdb_test "print e.foo" \
 206     "Attempting to access named field foo of tuple variant simple::MoreComplicated::Two, which has only anonymous fields"
 207
 208 gdb_test "print e2.variant" " = 10"
 209 gdb_test "print e2.notexist" \
 210     "Could not find field notexist of struct variant simple::MoreComplicated::Four"
 211 gdb_test "print e2.0" \
 212     "Variant simple::MoreComplicated::Four is not a tuple variant"
 213
 214 set pass_pattern " = simple::SpaceSaver::Nothing"
 215 set xfail_pattern " = simple::SpaceSaver::Thebox\\($decimal, 0x0\\)"
 216 gdb_test_multiple "print k" "" {
 217     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 218         pass $gdb_test_name
 219     }
 220     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 221         xfail $gdb_test_name
 222     }
 223 }
 224 gdb_test "print l" " = simple::SpaceSaver::Thebox\\(9, $hex\\)"
 225 gdb_test "print *l.1" " = 1729"
 226
 227 gdb_test "print diff2(3, 7)" " = -4"
 228 gdb_test "print self::diff2(8, 9)" " = -1"
 229 gdb_test "print ::diff2(23, -23)" " = 46"
 230
 231 gdb_test "ptype diff2" "fn \\(i32, i32\\) -> i32"
 232 gdb_test "ptype empty" "fn \\(\\)"
 233
 234 gdb_test "print (diff2 as fn(i32, i32) -> i32)(19, -2)" " = 21"
 235
 236 gdb_test "print diff2(73, 74 75" "',' or '\\\)' expected"
 237 gdb_test "print (diff2 as fn i32, i32) -> i32)(19, -2)" "'\\\(' expected"
 238 gdb_test "print (diff2 as fn (i32, i32) i32)(19, -2)" "'->' expected"
 239
 240 gdb_test "print \"hello rust\"" " = \"hello rust.*\""
 241 gdb_test "print \"hello" "Unexpected EOF in string"
 242 gdb_test "print r##\"hello \" rust\"##" " = \"hello \\\\\" rust.*\""
 243 gdb_test "print r\"hello" "Unexpected EOF in string"
 244 gdb_test "print r###\"###hello\"" "Unexpected EOF in string"
 245 gdb_test "print r###\"###hello\"##" "Unexpected EOF in string"
 246 gdb_test "print r###\"hello###" "Unexpected EOF in string"
 247
 248 gdb_test "print 0..5" " = .*::ops::Range.* \\{start: 0, end: 5\\}"
 249 gdb_test "print 0..=5" " = .*::ops::RangeInclusive.* \\{start: 0, end: 5\\}"
 250 gdb_test "print ..5" " = .*::ops::RangeTo.* \\{end: 5\\}"
 251 gdb_test "print ..=5" " = .*::ops::RangeToInclusive.* \\{end: 5\\}"
 252 gdb_test "print 5.." " = .*::ops::RangeFrom.* \\{start: 5\\}"
 253 gdb_test "print .." " = .*::ops::RangeFull"
 254
 255 set pass_pattern \
 256     " = core::option::Option<\[a-z\]+::string::String>::Some\\(\[a-z\]+::string::String .*"
 257 set xfail_pattern \
 258     "( = <error reading variable>|That operation is not available on .*)"
 259 gdb_test_multiple "print str_some" "" {
 260     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 261         pass $gdb_test_name
 262     }
 263     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 264         xfail $gdb_test_name
 265     }
 266 }
 267
 268 set pass_pattern " = core::option::Option<\[a-z\]+::string::String>::None"
 269 gdb_test_multiple "print str_none" "" {
 270     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 271         pass $gdb_test_name
 272     }
 273     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 274         xfail $gdb_test_name
 275     }
 276 }
 277
 278 gdb_test "print int_some" " = core::option::Option<u8>::Some\\(1\\)"
 279 gdb_test "print int_none" " = core::option::Option<u8>::None"
 280 # The result expressions are a bit lax here, to handle the fact that
 281 # the output varies between Rust versions.  Mostly we just want to
 282 # check for the presence "Option", "Box", "u8", and either "Some" or
 283 # "None".
 284 gdb_test "print box_some" \
 285     " = core::option::Option<\[a-z:\]*Box<u8.*>>::Some\\(.*\\)"
 286 gdb_test "print box_none" \
 287     " = core::option::Option<\[a-z:\]*Box<u8.*>>::None"
 288
 289 set pass_pattern \
 290     " = simple::NonZeroOptimized::Value\\(\[a-z\]+::string::String .*"
 291 gdb_test_multiple "print custom_some" "" {
 292     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 293         pass $gdb_test_name
 294     }
 295     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 296         xfail $gdb_test_name
 297     }
 298 }
 299
 300 set pass_pattern " = simple::NonZeroOptimized::Empty"
 301 gdb_test_multiple "print custom_none" "" {
 302     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 303         pass $gdb_test_name
 304     }
 305     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 306         xfail $gdb_test_name
 307     }
 308 }
 309
 310 gdb_test "print st" \
 311     " = simple::StringAtOffset {field1: \"hello\", field2: 1, field3: \"world\"}"
 312
 313 proc test_one_slice {svar length base range} {
 314     with_test_prefix $range {
 315         global hex
 316
 317         # Just accept any array here.
 318         set result " = &\\\[.*\\\] \\\[.*\\\]"
 319
 320         gdb_test "print $svar" $result
 321         gdb_test "print &${base}\[${range}\]" $result
 322     }
 323 }
 324
 325 test_one_slice slice 1 w 2..3
 326 test_one_slice slice 1 w 2..=2
 327 test_one_slice slice2 1 slice 0..1
 328 test_one_slice slice2 1 slice 0..=0
 329
 330 test_one_slice all1 4 w ..
 331 test_one_slice all2 1 slice ..
 332
 333 test_one_slice from1 3 w 1..
 334 test_one_slice from2 0 slice 1..
 335
 336 test_one_slice to1 3 w ..3
 337 test_one_slice to1 3 w ..=2
 338 test_one_slice to2 1 slice ..1
 339 test_one_slice to2 1 slice ..=0
 340
 341 gdb_test "print w\[2..3\]" "Can't take slice of array without '&'"
 342
 343
 344 gdb_test_sequence "complete print y.f" "" \
 345     {"print y.field1" "print y.field2"}
 346 gdb_test_sequence "complete print y." "" \
 347     {"print y.field1" "print y.field2"}
 348
 349 # Unimplemented, but we can at least test the parser productions.
 350 gdb_test "print (1,2,3)" "Tuple expressions not supported yet"
 351 gdb_test "print (1,)" "Tuple expressions not supported yet"
 352 gdb_test "print (1)" " = 1"
 353
 354 # Test a syntax error in tuple expressions.
 355 gdb_test "print (1,2,," "unexpected token"
 356 gdb_test "print (1,2 8" "',' or '\\\)' expected"
 357
 358 gdb_test "print 23..97.0" "Range expression with different types"
 359
 360 gdb_test "print (*parametrized.next.val)" \
 361     " = simple::ParametrizedStruct<i32> {next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>.*>>::Empty, value: 1}"
 362 gdb_test "print parametrized.next.val" \
 363     " = \\(\\*mut simple::ParametrizedStruct<i32>\\) $hex"
 364 gdb_test "print parametrized" \
 365     " = simple::ParametrizedStruct<i32> \\{next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>.*>>::Val\\{val: $hex\\}, value: 0\\}"
 366
 367 gdb_test_sequence "ptype/o SimpleLayout" "" {
 368     "/\\* offset      |    size \\*/  type = struct simple::SimpleLayout {"
 369     "/\\*      0      |       2 \\*/    f1: u16,"
 370     "/\\*      2      |       2 \\*/    f2: u16,"
 371     ""
 372     "                               /\\* total size \\(bytes\\):    4 \\*/"
 373     "                             }"
 374 }
 375
 376 gdb_test "print nonzero_offset" " = simple::EnumWithNonzeroOffset {a: core::option::Option<u8>::Some\\(1\\), b: core::option::Option<u8>::None}"
 377
 378 # PR rust/23626 - this used to crash.  Note that the results are
 379 # fairly lax because most existing versions of Rust (those before the
 380 # DW_TAG_variant patches) do not emit what gdb wants here; and there
 381 # was little point fixing gdb to cope with these cases as the fixed
 382 # compilers will be available soon
 383 gdb_test "print empty_enum_value" \
 384     " = simple::EmptyEnum.*"
 385 gdb_test "ptype empty_enum_value" "simple::EmptyEnum.*"
 386 # Just make sure these don't crash, for the same reason.
 387 gdb_test "print empty_enum_value.0" ""
 388 gdb_test "print empty_enum_value.something" ""
 389
 390 load_lib gdb-python.exp
 391 if {[skip_python_tests]} {
 392     continue
 393 }
 394
 395 gdb_test "python print(gdb.lookup_type('simple::HiBob'))" "simple::HiBob"
 396
 397 gdb_test_no_output "python e = gdb.parse_and_eval('e')" \
 398     "get value of e for python"
 399 gdb_test "python print(len(e.type.fields()))" "2"
 400 gdb_test "python print(e.type.fields()\[0\].artificial)" "True"
 401 gdb_test "python print(e.type.fields()\[1\].name)" "Two"
 402
 403 gdb_test "python print(e.type.dynamic)" "False"
 404
 405 # Before LLVM 8, the rust compiler would emit two types named
 406 # "simple::MoreComplicated" -- the C-like "underlying" enum type and
 407 # the Rust enum.  lookup_type seems to get the former, which isn't
 408 # very useful.  With later versions of LLVM, this test works
 409 # correctly.
 410 set v [split [rust_llvm_version] .]
 411 if {[lindex $v 0] >= 8} {
 412     gdb_test "python print(gdb.lookup_type('simple::MoreComplicated').dynamic)" \
 413         "True"
 414 }