https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104450
Bug ID: 104450 Summary: [12 Regression] ICE: verify_flow_info failed: BB 2 cannot throw but has an EH edge with -O -fnon-call-exceptions -fsanitize=thread -mavx512f Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 52379 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52379&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fnon-call-exceptions -fsanitize=thread -mavx512f testcase.c testcase.c: In function 'foo': testcase.c:8:1: error: BB 2 cannot throw but has an EH edge 8 | foo (void) | ^~~ during GIMPLE pass: isel testcase.c:8:1: internal compiler error: verify_flow_info failed 0xe7189e verify_flow_info() /repo/gcc-trunk/gcc/cfghooks.cc:284 0x127adea execute_function_todo /repo/gcc-trunk/gcc/passes.cc:2096 0x127b2fe execute_todo /repo/gcc-trunk/gcc/passes.cc:2138 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-7089-20220208123931-g0103c2e4082-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r12-7089-20220208123931-g0103c2e4082-checking-yes-rtl-df-extra-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.1 20220208 (experimental) (GCC)