http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57555
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The standard says that ~foo has type int and value -256, so assigning it to
uint8_t changes the value, so the warning is correct.
The warning is only given when foo is constant because otherwise the value of
~foo is not a compile-time constant.
