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-rw-r--r--src/gui/painting/qimagescale.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gui/painting/qimagescale.cpp b/src/gui/painting/qimagescale.cpp
index 867c64c5e0..2f85e90c49 100644
--- a/src/gui/painting/qimagescale.cpp
+++ b/src/gui/painting/qimagescale.cpp
@@ -312,7 +312,10 @@ static void qt_qimageScaleAARGBA_up_xy(QImageScaleInfo *isi, unsigned int *dest,
for (int x = dxx; x < end; x++) {
const unsigned int *pix = sptr + xpoints[x];
const int xap = xapoints[x];
- *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - xap, pix[1], xap);
+ if (xap > 0)
+ *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - xap, pix[1], xap);
+ else
+ *dptr = pix[0];
dptr++;
}
}