https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110971
Bug ID: 110971
Summary: ICE on valid code at -O3 on x86_64-linux-gnu: in
operator/, at sreal.cc:261
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: ---
It appears to be a recent regression.
Compiler Explorer: https://godbolt.org/z/een8566xd
[532] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20230810 (experimental) (GCC)
[533] %
[533] % gcctk -O3 small.c
during GIMPLE pass: lsplit
small.c: In function ‘main’:
small.c:2:5: internal compiler error: in operator/, at sreal.cc:261
2 | int main() {
| ^~~~
0x7e52f5 sreal::operator/(sreal const&) const
../../gcc-trunk/gcc/sreal.cc:261
0x7e52f5 sreal::operator/(sreal const&) const
../../gcc-trunk/gcc/sreal.cc:259
0x118e47b split_loop
../../gcc-trunk/gcc/tree-ssa-loop-split.cc:719
0x118ed4b tree_ssa_split_loops
../../gcc-trunk/gcc/tree-ssa-loop-split.cc:1769
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.
[534] %
[534] % cat small.c
int a, b, c, d;
int main() {
for (a = 0; a < 2; a++) {
if (b > 2)
c = 0;
if (b > a)
d = 0;
}
return 0;
}
