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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/106421] New: ICE with computed goto from a nested
 functon
Date: Sat, 23 Jul 2022 10:58:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106421

            Bug ID: 106421
           Summary: ICE with computed goto from a nested functon
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amonakov at gcc dot gnu.org
  Target Milestone: ---

int main(int argc, char **argv)
{
        __label__ loop, end;
        void jmp(int c) { goto *(c ? &&loop : &&end); }
loop:
        jmp(argc < 0);
end:{}
}


makes gcc -O2 segfault in find_edge during RTL cprop.

The documentation might want to specify that goto from a nested function to=
 a
containing function cannot be a 'computed goto' (must refer to the target l=
abel
directly by name).=