[Bug tree-optimization/108688] [13 Regression] error: ‘bit_field_ref’ of non-mode-precision operand

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108688

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |avieira at gcc dot gnu.org,
                   |                            |jakub at gcc dot gnu.org
           Keywords|needs-bisection             |

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly cleaned up:

union U { signed int d : 7; signed int e : 2; } u;
int a, b;

void
foo (void)
{
  for (int i = 0; i < 64; i++)
    {
      u.d = a;
      u.e ^= b;
    }
}

Yes, indeed started with r13-3219-g25413fdb2ac2493321 .