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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/57036] [4.9 Regression] ice in update_ssa_across_abnormal_edges
Date: Tue, 23 Apr 2013 11:27:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57036

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org
          Component|c                           |middle-end
             Blocks|                            |56982
   Target Milestone|---                         |4.9.0
            Summary|ice in                      |[4.9 Regression] ice in
                   |update_ssa_across_abnormal_ |update_ssa_across_abnormal_
                   |edges                       |edges

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-23 11:27:49 UTC ---
Closest equivalent non-local goto testcase that ICEs:

int j_;
int jpgDecode_convert (unsigned i)
{
  __label__ label;
  int j;

  inline void __attribute__((always_inline,leaf)) f(void)
  {
     g();
  }

  void __attribute__((noinline)) read_buf_open (void)
  {
    goto label;
  }

  if (i != 0)
    f ();
  j = j_;
  read_buf_open ();
label:
  return j;
}

> ./cc1 -quiet -O0 t.i
t.i: In function 'jpgDecode_convert':
t.i:23:1: error: definition in block 4 does not dominate use in block 7
 }
 ^
for SSA_NAME: j_2 in statement:
_3 = j_2;
t.i:23:1: internal compiler error: verify_ssa failed

same underlying issue I believe.