[Bug tree-optimization/123319] New: [16 Regression] ICE at -O2/O3 during IPA pass: cp

[xxs_chy at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123319

            Bug ID: 123319
           Summary: [16 Regression] ICE at -O2/O3 during IPA pass: cp
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xxs_chy at outlook dot com
  Target Milestone: ---

Created attachment 63166
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63166&action=edit
test.c

Reproducer: https://godbolt.org/z/Te3xvr8da

Command:
> gcc -O3 test.c

Dump:
during IPA pass: cp
<source>:86:1: internal compiler error: in meet_with_1, at ipa-cp.cc:843
   86 | }
      | ^
0x25b98a8 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
        ???:0
0x25ae66b internal_error(char const*, ...)
        ???:0
0xa1a806 fancy_abort(char const*, int, char const*)
        ???:0
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Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1