[Bug tree-optimization/40635] [12 Regression] bogus name and location in 'may be used uninitialized' warning

[msebor at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40635

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|bogus name and location in  |[12 Regression] bogus name
                   |'may be used uninitialized' |and location in 'may be
                   |warning                     |used uninitialized' warning

--- Comment #17 from Martin Sebor <msebor at gcc dot gnu.org> ---
In GCC 11 the statement in the phipopt2 dump does have a location so this part
is a GCC 12 regression:

  <bb 8> [local count: 5226752]:

  <bb 9> [local count: 1073741824]:
  # _16 = PHI <[../pr40635.c:22:20] -1(3), [../pr40635.c:30:12] s42_20(7),
[../pr40635.c:29:16] -1(8)>
  [../pr40635.c:38:5] foo ();
  [../pr40635.c:39:8] _28 = _16 < 0;
  [../pr40635.c:39:8] _5 = (int) _28;
  [../pr40635.c:39:8] _4 = -_5;
  return _4;