https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112856
Bug ID: 112856
Summary: [14 regression] ICE when building clustal-omega
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 56803
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56803&action=edit
hhalign.ii.xz
I've never heard of 'clustal-omega' either but it's one of our packages and it
broke, so...
Originally reported downstream in Gentoo at https://bugs.gentoo.org/919165 by
Toralf Förster.
```
# x86_64-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I../../src -fno-strict-aliasing
-DCLUSTALO -DCLUSTALO_NOFILE -DDEFAULT_FILTER=90 -fopenmp -O3 -march=native
-fno-semantic-interposition -pipe -Wa,-O2 -Wa,-mtune=znver2
-fcf-protection=none -fdiagnostics-color=always -fdiagnostics-urls=never
-frecord-gcc-switches -ggdb3 -c hhalign.cpp -fPIC -DPIC -o .libs/hhalign.o
In file included from hhalign.cpp:70:
hhhmm-C.h: In member function ‘void HMM::UseSecStrucDependentGapPenalties()’:
hhhmm-C.h:1748:16: warning: writing 1 byte into a region of size 0
[-Wstringop-overflow=]
1748 | iis[0]=iis[L]=0;
| ~~~~~~^~
hhhmm-C.h:1734:17: note: at offset [-2147483648, -1] into destination object
‘iis’ of size [0, 2147483647]
1734 | unsigned char iis[par.maxResLen]; // inside-integer array
| ^~~
during GIMPLE pass: ch_vect
In file included from hhalign.cpp:75:
hhhitlist-C.h: In member function ‘void HitList::SVD(double**, int, double*,
double**)’:
hhhitlist-C.h:2919:1: internal compiler error: in check_loop_closed_ssa_def, at
tree-ssa-loop-manip.cc:647
2919 | HitList::SVD(double **A, int n, double w[], double **V)
| ^~~~~~~
0x55fb54b5dd71 check_loop_closed_ssa_def
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/tree-ssa-loop-manip.cc:647
0x55fb54b5dd71 check_loop_closed_ssa_bb
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/tree-ssa-loop-manip.cc:661
0x55fb54b5d787 verify_loop_closed_ssa(bool, loop*)
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/tree-ssa-loop-manip.cc:697
0x55fb5449dd08 execute_function_todo
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/passes.cc:2106
0x55fb5449dd08 do_per_function
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/passes.cc:1687
0x55fb5449dd08 execute_todo
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231203/gcc-14-20231203/gcc/passes.cc:2142
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```
I can reproduce with 'g++ -c hhalign.ii -O3 -fno-strict-aliasing'.
