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-rw-r--r--src/opengl/gl2paintengineex/qtriangulatingstroker.cpp10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
index 6082f49..395b8a3 100644
--- a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
@@ -62,8 +62,14 @@ void QTriangulatingStroker::endCapOrJoinClosed(const qreal *start, const qreal *
endCap(cur);
}
int count = m_vertices.size();
- m_vertices.add(m_vertices.at(count-2));
- m_vertices.add(m_vertices.at(count-1));
+
+ // Copy the (x, y) values because QDataBuffer::add(const float& t)
+ // may resize the buffer, which will leave t pointing at the
+ // previous buffer's memory region if we don't copy first.
+ float x = m_vertices.at(count-2);
+ float y = m_vertices.at(count-1);
+ m_vertices.add(x);
+ m_vertices.add(y);
}