https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96729
Bug ID: 96729 Summary: hang on x86_64-linux-gnu with `-g -O3` 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: --- $ timeout -s 9 60 gcc-trunk -g -O3 t.c Killed $ $ cat t.c int a, b, d, e; int c[9][4]; int main() { for (;;) { long g; if (e) continue; d = 3; for (; d < 22; d++) { a = 0; for (; a < 55; a = a + 6) { b = 0; for (; b < 9; b++) { g = 0; c[b][g] = 3; } } } } } $ $ 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/11.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /tmp/tmp.uva1EAuUpA-gcc-builder/gcc/configure --enable-languages=c,c++,lto --enable-multiarch --prefix=/scratch/software/gcc-trunk --disable-bootstrap Thread model: posix Supported LTO compression algorithms: zlib gcc version 11.0.0 20200820 (experimental) [master revision :01cb32abf:04e23a4051fb3c049f85b9e6e2fc58f937337aff] (GCC) $ $ gcc-trunk -g -O2 t.c $ $