Messages in this thread | | | Date | Wed, 12 Jul 2006 11:38:48 +0100 | From | "Catalin Marinas" <> | Subject | Re: [PATCH 00/10] Kernel memory leak detector 0.8 |
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On 12/07/06, Joseph Fannin <jfannin@gmail.com> wrote: > On Tue, Jul 11, 2006 at 02:00:05PM +0100, Catalin Marinas wrote: > > That's a bug in gcc-4. The __builtin_constant_p() function always > > returns true even when the argument is not a constant. You could try a > > gcc-3.4 or a patched gcc. > > Which gcc versions are affected by this?
From gcc-4.0 I think but I don't know when/if it was fixed in the latest. I use CodeSourcery's toolchain and they fixed in in gcc-4.1 but that's with their own patches. Try to compile the code below. It should work if the toolchain is OK:
#include <stdlib.h>
#define EXPR atoi(argv[1])
int main(int argc, char *argv[]) { static int a[] = { __builtin_constant_p(EXPR) ? EXPR : 0 };
return a[0]; }
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