https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114137
--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
I have another testcase where it works with -save-temps or the GC params.
bibtexu-3.71_p20210325:
```
# i686-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -DUNIX -DKPATHSEA
-DU_DISABLE_RENAMING=1 -I/usr/include -DUTF_8 -Wimplicit -Wreturn-type -O3
-pipe -march=i686 -fdiagnostics-color=always -mfpmath=sse -msse -msse2
-fno-vect-cost-model -fharden-control-flow-redundancy -fpermissive -c -o
bibtexu-bibtex-4.o bibtex-4.c -fharden-control-flow-redundancy
during RTL pass: rtl pre
In file included from bibtex-4.c:130:
bibtex-4.c: In function ‘x_format_name’:
sysdep.h:210:37: internal compiler error: Segmentation fault
210 | #define END }
| ^
bibtex-4.c:1303:1: note: in expansion of macro ‘END’
1303 | END
| ^~~
0x579d3dc9 crash_signal
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/toplev.cc:319
0x586e7ff0 mark_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3364
0x586e6638 mark_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3416
0x586e6638 mark_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3411
0x586e6638 mark_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3411
0x586e6638 reset_used_flags(rtx_def*)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3428
0x586e6638 reset_insn_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3094
0x586e6638 reset_all_used_flags
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3111
0x586e4737 verify_rtl_sharing()
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/emit-rtl.cc:3147
0x5832756c execute_function_todo
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/passes.cc:2109
0x5832756c do_per_function
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/passes.cc:1687
0x5832756c execute_todo
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/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.
```
For both test cases, -fno-harden-control-flow-redundancy also suppresses the
ICE.
