https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67107
Bug ID: 67107
Summary: [6 Regression] ICE: SIGSEGV in tree_class_check with
-frounding-math -funsafe-math-optimizations
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36115
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36115&action=edit
reduced testcase
Compiler output:
$ gcc -frounding-math -funsafe-math-optimizations testcase.c
testcase.c: In function 'test':
testcase.c:3:3: internal compiler error: Segmentation fault
return 5.0 < 5.0 - 0.1;
^
0xc19cdf crash_signal
/mnt/svn/gcc-trunk/gcc/toplev.c:352
0x9845d6 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/mnt/svn/gcc-trunk/gcc/tree.h:2980
0x9845d6 generic_simplify_GT_EXPR
/home/smatz/build-226486-lto-fortran-checking-yes-rtl-df/gcc/generic-match.c:18582
0x990dfd generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/smatz/build-226486-lto-fortran-checking-yes-rtl-df/gcc/generic-match.c:34963
0x85073e fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/mnt/svn/gcc-trunk/gcc/fold-const.c:9108
0x85d67a fold_build2_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/mnt/svn/gcc-trunk/gcc/fold-const.c:12781
0x66d093 c_fully_fold_internal
/mnt/svn/gcc-trunk/gcc/c-family/c-common.c:1361
0x66e1e5 c_fully_fold(tree_node*, bool, bool*)
/mnt/svn/gcc-trunk/gcc/c-family/c-common.c:1144
0x5e762c c_finish_return(unsigned int, tree_node*, tree_node*)
/mnt/svn/gcc-trunk/gcc/c/c-typeck.c:9379
0x62332e c_parser_statement_after_labels
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:5042
0x6248d5 c_parser_compound_statement_nostart
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:4696
0x62511e c_parser_compound_statement
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:4533
0x620f67 c_parser_declaration_or_fndef
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:1966
0x62b297 c_parser_external_declaration
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:1436
0x62bb59 c_parser_translation_unit
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:1323
0x62bb59 c_parse_file()
/mnt/svn/gcc-trunk/gcc/c/c-parser.c:15449
0x6875b2 c_common_parse_file()
/mnt/svn/gcc-trunk/gcc/c-family/c-opts.c:1058
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-226486-lto-fortran-checking-yes-rtl-df/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-226486-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl --without-isl
Thread model: posix
gcc version 6.0.0 20150803 (experimental) (GCC)
Tested revisions:
r226486 - ICE
gcc-5-branch r225803 - OK
