https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107194
Bug ID: 107194 Summary: wrong code at -O1 on x86_64-linux-gnu Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- This works for 12.2, so should be a recent regression. Compiler Explorer: https://godbolt.org/z/7vobTxhG4 [581] % gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib --with-system-zlib Thread model: posix Supported LTO compression algorithms: zlib gcc version 13.0.0 20221009 (experimental) [master r13-3180-ge95e91eccd0] (GCC) [582] % [582] % gcctk -O1 small.c [583] % ./a.out Aborted [584] % cat small.c int a, b; int main() { int c = 0; long d; for (; b < 1; b++) { (c && d) & 3 || a; d = c; c = -1; if (d) __builtin_abort(); } return 0; }