Dave Korn wrote:
On 12 November 2006 04:16, Howard Chu wrote:
Dave Korn wrote:
f = (struct foo *)(void *)buf;
That's good, but why is it safe?
Passing through void* means gcc has to assume it could alias anything,
IIUIC, as a result of the standard allowing implicit void*<=>T* conversions.
Ah right, 6.5.16.1 Simple assignment, Constraints...
one operand is a pointer to an object or incomplete type and the
other is a pointer to a qualified or unqualified version of void, and
the type pointed to by the left has all the qualifiers of the type
pointed to by the right;
So actually
f = (void *)buf;
works without complaint.
Thanks for pointing that out.
--
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc
OpenLDAP Core Team http://www.openldap.org/project/
