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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/99322] [11 Regression] ICE in change_scope, at final.c:1480
Date: Fri, 05 Mar 2021 16:41:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99322

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
void bar (void *);
void
foo (void)
{
  bar (&&lab);
  #pragma omp parallel
  for (;;)
    ;
  lab:;
}
ICEs likely since r0-88143-gb357f682db35f4431e3011e7486a0ac865686e3e
Not really sure what to do if we find unreachable blocks with labels that n=
eed
to be preserved, we need to figure out where to place them exactly.
As the problematic pass is only the cfg pass (if flag_openmp || flag_openac=
c ||
flag_openmp_simd), I wonder if we e.g. shouldn't keep bb_to_omp_idx valid
across the cleanup_tree_cfg and if non-NULL, use that for the forced label =
from
unreachable blocks placement.=