https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101242
--- Comment #1 from Martin Jambor <jamborm at gcc dot gnu.org> ---
For the reference, this is the backtrace:
mjambor@virgil:/tmp/bbb$ ~/gcc/trunk/inst/bin/gcc -S -Ofast test.i
during GIMPLE pass: slp
test.i: In function ‘check_su3’:
test.i:11:5: internal compiler error: Segmentation fault
11 | int check_su3() {
| ^~~~~~~~~
0x12ad5a0 crash_signal
/home/mjambor/gcc/trunk/src/gcc/toplev.c:327
0x162643d vec<_stmt_vec_info*, va_heap, vl_embed>::iterate(unsigned int,
_stmt_vec_info**) const
/home/mjambor/gcc/trunk/src/gcc/vec.h:932
0x1625168 vec<_stmt_vec_info*, va_heap, vl_ptr>::iterate(unsigned int,
_stmt_vec_info**) const
/home/mjambor/gcc/trunk/src/gcc/vec.h:1698
0x166d14d vect_optimize_slp(vec_info*)
/home/mjambor/gcc/trunk/src/gcc/tree-vect-slp.c:3992
0x1672d1e vect_slp_analyze_bb_1
/home/mjambor/gcc/trunk/src/gcc/tree-vect-slp.c:5621
0x1673111 vect_slp_region
/home/mjambor/gcc/trunk/src/gcc/tree-vect-slp.c:5708
0x1673bba vect_slp_bbs
/home/mjambor/gcc/trunk/src/gcc/tree-vect-slp.c:5858
0x1674063 vect_slp_function(function*)
/home/mjambor/gcc/trunk/src/gcc/tree-vect-slp.c:5944
0x168f92b execute
/home/mjambor/gcc/trunk/src/gcc/tree-vectorizer.c:1445
Please submit a full bug report...
