[Bug ada/115349] GNAT infers the wrong Accum_Type for a Reducer expression

[devotus at yahoo dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115349

--- Comment #2 from Jack Perry <devotus at yahoo dot com> ---
Sorry, that's what I mean by "crash":
```
raised CONSTRAINT_ERROR : intvec.adb:14 range check failed
```