https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72818
pmatos at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from pmatos at gcc dot gnu.org ---
octoploid in IRC pointed out that GCC warns about this with
-Wstrict-aliasing=2:
$ gcc -Wstrict-aliasing=2 -Os -c -ocast.s cast.c
cast.c: In function ‘foo’:
cast.c:1:1: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
void foo(unsigned char x){unsigned int *y=(unsigned int *)&x; *y=0x12345678;}
^
Closing as invalid.
