https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100522
Bug ID: 100522 Summary: ICE: in extract_ops_from_tree, at gimple-expr.c:556 Product: gcc Version: tree-ssa Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: cnsun at uwaterloo dot ca Target Milestone: --- $ gcc-trunk -v Using built-in specs. COLLECT_GCC=gcc-trunk COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /tmp/tmp.FUbEknNORK-gcc-builder/gcc/configure --enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch --prefix=/scratch/software/gcc-trunk --disable-bootstrap Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.0.0 20210511 (experimental) [master revision :7db32cac8:aa891c56f25baac94db004e309d1b6e40b770a95] (GCC) $ cat mutant.c __GIMPLE foo() { int t1; t1_1 = t1_1(); } $ gcc-trunk -O0 mutant.c mutant.c:1:1: error: ‘__GIMPLE’ only valid with ‘-fgimple’ 1 | __GIMPLE | ^~~~~~~~ mutant.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int] 2 | foo() { | ^~~ mutant.c: In function ‘foo’: mutant.c:4:3: internal compiler error: in extract_ops_from_tree, at gimple-expr.c:556 4 | t1_1 = t1_1(); | ^~~~ 0x6cbc8c extract_ops_from_tree(tree_node*, tree_code*, tree_node**, tree_node**, tree_node**) /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.c:556 0xbe12d0 gimple_build_assign(tree_node*, tree_node*) /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple.c:436 0x952c1a c_parser_gimple_statement /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/gimple-parser.c:880 0x952c1a c_parser_gimple_compound_statement /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/gimple-parser.c:650 0x952c1a c_parser_gimple_compound_statement /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/gimple-parser.c:381 0x954fa7 c_parser_parse_gimple_body(c_parser*, char*, c_declspec_il, profile_count) /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/gimple-parser.c:253 0x944187 c_parser_declaration_or_fndef /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/c-parser.c:2533 0x94b9d3 c_parser_external_declaration /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/c-parser.c:1777 0x94c439 c_parser_translation_unit /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/c-parser.c:1650 0x94c439 c_parse_file() /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c/c-parser.c:21984 0x9ac765 c_common_parse_file() /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/c-family/c-opts.c:1218 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.