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-rw-r--r--indra/llmath/llvolume.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index df4c618ac1..192c6157a8 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -3822,6 +3822,7 @@ BOOL LLVolume::cleanupTriangleData( const S32 num_input_vertices,
// Generate the vertex mapping and the list of vertices without
// duplicates. This will crash if there are no vertices.
+ llassert(num_input_vertices > 0); // check for no vertices!
S32 *vertex_mapping = new S32[num_input_vertices];
LLVector3 *new_vertices = new LLVector3[num_input_vertices];
LLVertexIndexPair *prev_pairp = NULL;