[Bug c/123356] [15/16 regression] -fstrict-aliasing miscompile struct swap when there is another identical struct (from flint code base)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123356

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=122572
           Keywords|                            |alias, wrong-code
            Summary|-fstrict-aliasing           |[15/16 regression]
                   |miscompile struct swap when |-fstrict-aliasing
                   |there is another identical  |miscompile struct swap when
                   |struct (from flint code     |there is another identical
                   |base)                       |struct (from flint code
                   |                            |base)
   Target Milestone|---                         |15.3

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
-std=gnu17 works