[Bug middle-end/114084] ICE: SIGSEGV: infinite recursion in fold_build2_loc / fold_binary_loc with _BitInt(127)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114084

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-02-24

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, here is a testcase which should be generic for even 16bit int
targets.

```
typedef unsigned _BitInt(sizeof(int)*8-1) ub63;
ub63 ub63_0, ub63_1;

void
foo (void)
{
   ub63_1 = (ub63)
   ((ub63_0 |  (-1u>>1) ) >> 1 | (ub63_0 | 5) <<  4);
}
```

Note I tried to reproduce this using bitfields but that works. Also note the
cast is important here ...