diff options
| -rw-r--r-- | src/gui/painting/qregion.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp index 3fb6f925b3..ba8defbfe3 100644 --- a/src/gui/painting/qregion.cpp +++ b/src/gui/painting/qregion.cpp @@ -2281,7 +2281,14 @@ static void miRegionOp(QRegionPrivate &dest, dest.vectorize(); - QVector<QRect> oldRects = dest.rects; + /* + * The following calls are going to detach dest.rects. Since dest might be + * aliasing *reg1 and/or *reg2, and we could have active iterators on + * reg1->rects and reg2->rects (if the regions have more than 1 rectangle), + * take a copy of dest.rects to keep those iteractors valid. + */ + const QVector<QRect> destRectsCopy = dest.rects; + Q_UNUSED(destRectsCopy); dest.numRects = 0; |