--- Eljay Love-Jensen <eljay@xxxxxxxxx> wrote: > Hi Prawit, > > >Does anybody has any explaination [why the > compiler allocates more than > specified]? > > Alignment. If we need char a[9] and the compiler allocated 12 bytes for me. That makes sense. But I'm wondering why I need 9 bytes but compiler allocated 24 bytes. I might misunderstand about alignment. And I will be appreciate if you could tell me why it gonna be that way. > > You didn't specify what platform, GCC version > (3.3.4? 3.4.0?), and compile > options you are using. If you are not generated > optimized code, the code > may not be optimized. > gcc 2.96 on x86 And asm code are the same no matter what you gonna optimized or not. > It is also possible that one of the GCC Gnurus made > a boo-boo. Rare, but > can happen. Especially between optimizations that > are in contention, which > may have unintended side-effects on different > platforms. (I discovered 3 > such issues, on GCC 2.95 on Solaris. They're all > fixed now.) > > HTH, > --Eljay > > __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail
