[Bug ada/122063] Unexpected overflow check before fixed-point multiplication

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122063

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |ebotcazou at gcc dot gnu.org
   Last reconfirmed|                            |2025-09-25

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Very nice pathological case, which seems to manipulate only 32-bit and 64-bit
types on the surface but, because of RM 3.5.9(12), actually needs to perform
computations in 64-bit and 128-bit types respectively (and indeed fails).

Thanks also for the detailed (and correct) analysis.