On Jul 7, 2003, Ben Davis <bndavis@xxxxxxxxxxxx> wrote: > Allegro <http://alleg.sf.net/> has used the following technique for > a long time: I guess they never tried -ffunction-sections, or this option is a do-nothing on ports in which they actually care about a function's size. > Assuming it doesn't exist already, I think sizeof(function) or something like > it would be a very useful GNU Extension for future GCC versions :) Can't really be done, at least not without surprising semantics. IIRC, sizeof already has a well-defined meaning when the argument is a function: the function decays to pointer, and you get the size of the pointer. Besides, sizeof is supposed to return a compile-time constant, but the size of a function is most often only known at assembly time, or, worse, at link time, in case linker relaxations are available. And don't even get me started on ELF dynamic library symbol binding and replacement rules :-) -- Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/ Red Hat GCC Developer aoliva@{redhat.com, gcc.gnu.org} CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org} Free Software Evangelist Professional serial bug killer
