[Bug tree-optimization/92111] [10 Regression] ICE during GIMPLE pass: dom

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92111

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Please include any flags that were used in building things.  For example, it
looks like it needs at least -std=c++17 to work.

I can't reproduce with a ./cc1plus -O2.  I also can't reproduce with -flto:

./xgcc -B./ a.ii -w -O2 -std=c++17 -flto
/usr/bin/ld: /lib/../lib64/crt1.o: in function `_start':
(.text+0x24): undefined reference to `main'
/usr/bin/ld: /tmp/cczITmdb.ltrans0.ltrans.o:(.qtversion[qt_version_tag]+0x0):
undefined reference to `qt_version_tag'
collect2: error: ld returned 1 exit status

Have you tried with a more recent trunk?

Can you reproduce at all without -flto, as LTO is a bit trickier to debug, and
may require you sending more files.

Can you narrow down the source to the smallest subset that can still reproduce
the bug?