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-rw-r--r--basegfx/source/polygon/b3dpolygon.cxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/basegfx/source/polygon/b3dpolygon.cxx b/basegfx/source/polygon/b3dpolygon.cxx
index 70a5aeb357df..5a07ab2b6d0c 100644
--- a/basegfx/source/polygon/b3dpolygon.cxx
+++ b/basegfx/source/polygon/b3dpolygon.cxx
@@ -278,6 +278,7 @@ public:
BColorDataVector::const_iterator aStart(rOriginal.maVector.begin());
aStart += nIndex;
BColorDataVector::const_iterator aEnd(aStart);
+ assert(nCount <= rOriginal.maVector.size());
aEnd += nCount;
maVector.reserve(nCount);