path: root/src/gui/image
diff options
authorAndrew Knight <>2014-11-25 13:31:20 +0200
committerJani Heikkinen <>2014-11-26 10:47:01 +0100
commit9b01589e58d458b6367b3578079e73ddc2ef458f (patch)
treeb1077ab4d068b1fe97ee8e67e397677b2c715a45 /src/gui/image
parent155306ffee1941194d44dd632a7993fce4a05606 (diff)
Turn off optimizations of qt_depthForFormat on Windows Runtime ARM
This function is apparently optimized in a way that gives a bad return value (or leaves the variable where it is used uninitialized), leading to extreme memory allocations and eventual heap exhaustion. Task-number: QTBUG-42038 Change-Id: Ia4ee9fc6475a0bf40e25eed356b027a4dc68d119 Reviewed-by: Maurice Kalinowski <>
Diffstat (limited to 'src/gui/image')
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gui/image/qimage_p.h b/src/gui/image/qimage_p.h
index eec54ed4eb..7e2d4305ef 100644
--- a/src/gui/image/qimage_p.h
+++ b/src/gui/image/qimage_p.h
@@ -116,6 +116,9 @@ void qInitImageConversions();
const uchar *qt_get_bitflip_array();
Q_GUI_EXPORT void qGamma_correct_back_to_linear_cs(QImage *image);
+#if defined(Q_OS_WINRT) && defined(_M_ARM) // QTBUG-42038
+#pragma optimize("", off)
inline int qt_depthForFormat(QImage::Format format)
int depth = 0;
@@ -158,6 +161,9 @@ inline int qt_depthForFormat(QImage::Format format)
return depth;
+#if defined(Q_OS_WINRT) && defined(_M_ARM)
+#pragma optimize("", on)