https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102762
Bug ID: 102762 Summary: ICE with -O2: Segmentation fault, memcpy, copy_bb Product: gcc Version: unknown 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.gzh6IUhxke-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 20211014 (experimental) [master -gee9fa8a57] (GCC) $ cat mutant.c foo(a, b) { log_bad_request(0, __builtin_va_arg_pack()); foo(0); } $ gcc-trunk -w -O2 mutant.c during IPA pass: inline mutant.c: In function ‘foo’: mutant.c:3:3: internal compiler error: Segmentation fault 3 | foo(0); | ^~~~~~ 0xf8c8d3 crash_signal /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/toplev.c:326 0x101972c memcpy /usr/include/x86_64-linux-gnu/bits/string_fortified.h:34 0x101972c copy_bb /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:2130 0x101aac2 copy_cfg_body /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:3070 0x101aac2 copy_body /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:3323 0x101dc06 expand_call_inline /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:5108 0x101f591 gimple_expand_calls_inline /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:5303 0x101f591 optimize_inline_calls(tree_node*) /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/tree-inline.c:5476 0xd2eddb inline_transform(cgraph_node*) /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/ipa-inline-transform.c:790 0xe93b34 execute_one_ipa_transform_pass /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/passes.c:2290 0xe93b34 execute_all_ipa_transforms(bool) /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/passes.c:2337 0xae3d29 cgraph_node::expand() /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/cgraphunit.c:1821 0xae514f expand_all_functions /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/cgraphunit.c:1992 0xae514f symbol_table::compile() /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/cgraphunit.c:2356 0xae802b symbol_table::compile() /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/cgraphunit.c:2269 0xae802b symbol_table::finalize_compilation_unit() /tmp/tmp.gzh6IUhxke-gcc-builder/gcc/gcc/cgraphunit.c:2537 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.