[Bug bootstrap/80887] gnat bootstrap fails at s-regpat.o: raised STORAGE_ERROR : stack overflow or erroneous memory access

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80887

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Trying to print captures in the frame that calls gimple_simplify_135 I see it
oscillating between:
parse_pos.474_23
4294967295
4294967295

and

_78
1
4294967294

(captures[0..2]).

  _76 = CHAIN.552_67(D)->parse_pos;
  _78 = _76 + 1;
...
  _115 = CHAIN.552_67(D)->parse_pos;
  parse_pos.474_23 = (sizetype) _115;
  _24 = parse_pos.474_23 + 4294967295;