https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113895
--- Comment #8 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
Another likely related one (though ICE during a different pass and at a
different location):
[519] % 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/14.0.1/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 14.0.1 20240213 (experimental) (GCC)
[520] %
[520] % gcctk -O1 small.c
during GIMPLE pass: fre
small.c: In function ‘main’:
small.c:8:1: internal compiler error: in copy_reference_ops_from_ref, at
tree-ssa-sccvn.cc:1165
8 | }
| ^
0x863773 copy_reference_ops_from_ref
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1165
0x1298f9a valueize_shared_reference_ops_from_ref
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1858
0x1298f9a valueize_shared_reference_ops_from_ref
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1853
0x1298f9a vn_reference_lookup(tree_node*, tree_node*, vn_lookup_kind,
vn_reference_s**, bool, tree_node**, tree_node*, bool)
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:4063
0x129d8b4 visit_reference_op_load
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:5852
0x129d8b4 visit_stmt
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:6373
0x129df5f process_bb
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8145
0x129f81e do_rpo_vn_1
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8746
0x12a1253 execute
../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8907
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.
[521] %
[521] % cat small.c
extern void f();
char a[1][1], b;
int main() {
int c = -1U;
if (b)
f(a[c][b]);
return 0;
}
