Nick Maclaren wrote: > But this is actually a BUG in gcc - look at 5.1.1.3. The restriction > that sizeof may not have an argument that is function type is a > constraint, and therefore a breach requires a diagnostic. It would only be a bug if there was no diagnostic in non-GNU mode, e.g. -std=c89. Otherwise the default is -std=gnu89 if not specified and as the other poster pointed out, GNU extensions allow this and define the return value as 1 for convenience. Brian
