On Tue, May 17, 2016 at 04:44:04PM +0100, Frediano Ziglio wrote: > With my compile switches (which are mostly derived from RedHat spec > file) I'm getting this warning: > > stream-test.c: In function 'sock_fd_read': > stream-test.c:66:43: warning: dereferencing type-punned pointer will > break strict-aliasing rules [-Wstrict-aliasing] > *fd = *((int *) CMSG_DATA(cmsg)); > ^ > > memcpy could decrease performance but as this is a test it's not > an issue. Can you avoid the warning with an additional (void *) cast? *fd = *((int *) (void *) CMSG_DATA(cmsg))); ? Christophe
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