Comment 2 for bug 831811

StacktraceTop:
 _mm_stream_si128 (__B=<optimized out>, __A=<optimized out>) at /usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/include/emmintrin.h:1424
 qt_memfill32_sse2 (count=735744, value=4294967295, dest=0x7f4c06276000) at painting/qdrawhelper_sse2.cpp:269
 qt_memfill32_sse2 (dest=<optimized out>, value=4294967295, count=<optimized out>) at painting/qdrawhelper_sse2.cpp:242
 fillRect_normalized (r=<optimized out>, data=0xfcaac0, pe=0xfd7a00) at painting/qpaintengine_raster.cpp:1488
 QRasterPaintEngine::fillRect (this=0xfdd380, r=..., data=0xfcaac0) at painting/qpaintengine_raster.cpp:1880