This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

gcc optimization and stack allocation.


Hi,

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.

Yang Ye



Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]