[Bug target/53758] New: Segfault at 'vmovaps' when setting pointer array in a loop

jan.boon at kaetemi dot be gcc-bugzilla@gcc.gnu.org
Sun Jun 24 08:42:00 GMT 2012


             Bug #: 53758
           Summary: Segfault at 'vmovaps' when setting pointer array in a
    Classification: Unclassified
           Product: gcc
           Version: 4.6.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jan.boon@kaetemi.be

Created attachment 27692
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27692
Disassemly of function and list of registers.

Segfault in a simple loop that sets pointers in an array to NULL.
Target is -march=bdver1 -mtune=bdver1.

for(i = 0; i < NL_DLM_LIGHTMAP_TYPE_SIZE; i++)
    _FreeBlocks[i] = NULL;

   0x00007ffff6ea4b00 <+608>:    inc    %edx
=> 0x00007ffff6ea4b02 <+610>:    vmovaps %xmm0,(%rcx)
   0x00007ffff6ea4b06 <+614>:    add    $0x10,%rcx
   0x00007ffff6ea4b0a <+618>:    cmp    %edx,%esi
   0x00007ffff6ea4b0c <+620>:    ja     0x7ffff6ea4b00 

edx            0x1    1
rcx            0x159106a4    361825956
esi            0x8    8

Full log in attachment.

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