[Bug middle-end/61196] Optimizer does not handle memory accesses with two pointers to same location correctly

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61196

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
The code breaks the aliasing rules of ISO C and thus has undefined behavior.

Compile with -Wstrict-aliasing=1 to get a warning and -fno-strict-aliasing to
ask it to be forgiving about the violation.