Hey all,
I have been reading up on buffer overflows and have noticed something odd
with gcc assembly output. Consider the following:
void func()
{
char buf[15];
}
main()
{
func();
}
When running 'gcc -S' it shows that 24 bytes are allocated on the stack
for buf[]. I thought it should allocate only 16 bytes. It works fine, it
just makes no sense to me. If I tweak the assembly and change it to 16
bytes and also change the offsets to %ebp that reference it, it works fine
also.
Does anyone know why gcc does this? My need to understand everything is
killing me!
-Marc
This archive was generated by hypermail 2b30 : Mon Jul 09 2001 - 13:36:04 PDT