close 323646 4.0.1-5
thanks
fixed at least in gcc-4.0_4.0.1-5
Alexander Toresson writes:
> Package: gcc-4.0
> Version: 4.0.1-2
> Severity: normal
>
>
> When compiled with -O1 -msse2 -ftree-vectorize, the following code
> snippet segfaults on data[i] = 1;:
>
> #include <stdlib.h>
>
> void *NM_First;
>
> void *NM_Allocate(int bytes)
> {
> void *ret;
> while (1)
> {
> ret = NM_First;
> NM_First = (void*) ((long) NM_First + bytes);
> return ret;
> }
> return 0;
> }
>
>
> void* repeat_atom()
> {
> double *data;
> void* item;
> int i;
> data = NM_Allocate(16);
> for (i=0; i < 4; i++)
> {
> data[i] = 1;
> }
> item = NM_Allocate(12);
> return item;
> }
>
> int main()
> {
> struct ITEM *array1, *array2;
>
> NM_First = malloc(256);
>
> array1 = repeat_atom();
> array2 = repeat_atom();
>
> return 0;
> }
>
> This was tested on a Pentium M Sonoma.
>
> Regards, Alexander Toresson
>
> -- System Information:
> Debian Release: testing/unstable
> APT prefers testing
> APT policy: (500, 'testing')
> Architecture: i386 (i686)
> Shell: /bin/sh linked to /bin/bash
> Kernel: Linux 2.6.12.1.custom.1.1
> Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)
>
> Versions of packages gcc-4.0 depends on:
> ii binutils 2.16.1-3 The GNU assembler, linker and
> bina
> ii cpp-4.0 4.0.1-2 The GNU C preprocessor
> ii gcc-4.0-base 4.0.1-2 The GNU Compiler Collection
> (base
> ii libc6 2.3.5-4 GNU C Library: Shared libraries
> an
> ii libgcc1 1:4.0.1-2 GCC support library
>
> Versions of packages gcc-4.0 recommends:
> ii libc6-dev 2.3.5-4 GNU C Library: Development
> Librari
> pn libmudflap0-dev <none> (no description available)
>
> -- no debconf information
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