"Yang Ye" <leafyoung@xxxxxxxxx> writes: > Do you have any idea on this scenario: When gcc(3.3.3) allocating > space for local varibles, e.g. a statement like 'char buf[256];', > the allocated buffers in stack always come with some space filled in > at the end. If choose higher optimization level, let's say gcc -O6, > the spaced filled at the end are smaller. I searched quite a lot > documents, cannot find the official reason. There is no "official reason". This depends on various gcc internals in a hard to predict way. The real question is: why do you care? -- Falk
