"Martin Krischik" <krischik@xxxxxxxxxxxxxxxxxxxxx> wrote: > > If it is invalid to use sizeof() with a function type expression - why not > an make it an compile time error? That is what most compilers do. However, gcc allows pointer arithmetic on function pointers, to enable C code to poke through compiled code (e.g. to disassemble code). Given how few programmers ever do that sort of thing, it could perfectly well issue a warning even without -pedantic. But it doesn't. Note that, for C language reasons, it is virtually impossible to separate the handling of sizeof(<type>) from allowing arithmetic on values of type '<type> *'. Regards, Nick Maclaren, University of Cambridge Computing Service, New Museums Site, Pembroke Street, Cambridge CB2 3QH, England. Email: nmm1@xxxxxxxxx Tel.: +44 1223 334761 Fax: +44 1223 334679