Messages in this thread | | | Subject | Re: [PATCH 00/10] Kernel memory leak detector 0.8 | Date | Thu, 13 Jul 2006 22:22:34 -0400 | From | Horst von Brand <> |
| |
Catalin Marinas <catalin.marinas@gmail.com> wrote: > 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]; > }
Fails with gcc-4.1.1-7 from Fedora Core development. -- Dr. Horst H. von Brand User #22616 counter.li.org Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |