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-rw-r--r--src/pathfinder/npf/queue.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/pathfinder/npf/queue.cpp b/src/pathfinder/npf/queue.cpp
index b235c3b0e..b12c59d6c 100644
--- a/src/pathfinder/npf/queue.cpp
+++ b/src/pathfinder/npf/queue.cpp
@@ -234,6 +234,9 @@ void Hash::Init(Hash_HashProc *hash, uint num_buckets)
/* Allocate space for the Hash, the buckets and the bucket flags */
uint i;
+ /* Ensure the size won't overflow. */
+ assert(num_buckets < SIZE_MAX / (sizeof(*this->buckets) + sizeof(*this->buckets_in_use)));
+
this->hash = hash;
this->size = 0;
this->num_buckets = num_buckets;