On Fri, Nov 27, 2009 at 1:26 AM, Roopesh Majeti <roopesh.maj...@gmail.com> wrote: > Hi All, > Iam new to this fedora world.. a small question on the below discussion: > It is mentioned that having, zero in the third argument is legitimate use > cases. Can somebody direct me to such a use case, as i feel, giving memset a > zero, is asking it, not to do anything [ might have side effects, not sure > from my end, though ].
It's legitimate because the zero may ultimately be derived from macro values and restructuring the code to avoid the memset depending on defined values may be non-trivial or even impossible. John Reiser provided a good example: http://www.linux-archive.org/fedora-development/286221-memset-bugs.html Where its not a programming bug the memset(,,0) is harmless: GCC optimizes it out completely. A literal zero prior to preprocessing is either a bug, or some kind of dead- code causing place-holder. -- fedora-devel-list mailing list fedora-devel-list@redhat.com https://www.redhat.com/mailman/listinfo/fedora-devel-list
