[Bug tree-optimization/103192] [12 Regression] ICE on libgomp target-in-reduction-2.{C,c}

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103192

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For me, all I can see is that clearly at runtime omp_add_variable is called
with pctx NULL despite the if (pctx) guard around it and that until threadfull2
I was seeing a guarding condition in the IL that ensured that (either test of
the SSA_NAME passed to first arg of omp_add_variable later against 0, or in
some cases/some revisions something like:
  temp = code == OMP_TARGET ? outer_ctx : ctx;
...
  if (code != OMP_TARGET)
    goto bbn;
  if (outer_ctx != 0)
    goto bbn;
  else
    goto somewhere_else;
bbn:
  omp_add_variable (temp, ...);
which is also fine, as ctx is guaranteed to be non-NULL.