Stack space and declarations

Václav Haisman V.Haisman@sh.cvut.cz
Thu Dec 15 23:43:00 GMT 2005


Hi,
first some C code:

void foo (int x)
{
  int y = 0;
  if (x) {
    int z = 0;
    // some more code
  }
  else {
    int w = 0;
    // some more code
  }
}

Now, how much stack space is getting allocated in the function? Is it
(assuming 32bit architecture) 2*4=8 bytes (y + (z or w)) or is it 3*4=12
(each variable gets its own slot)?


Vaclav Haisman
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 546 bytes
Desc: OpenPGP digital signature
URL: <https://gcc.gnu.org/pipermail/gcc-help/attachments/20051215/cf09ae67/attachment.sig>


More information about the Gcc-help mailing list