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-rw-r--r--src/mapblock.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index 9eb64a76e..39cac0b60 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -465,11 +465,11 @@ s16 MapBlock::getGroundLevel(v2s16 p2d)
// sure we can handle all content ids. But it's absolutely worth it as it's
// a speedup of 4 for one of the major time consuming functions on storing
// mapblocks.
-static content_t getBlockNodeIdMapping_mapping[USHRT_MAX];
+static content_t getBlockNodeIdMapping_mapping[USHRT_MAX + 1];
static void getBlockNodeIdMapping(NameIdMapping *nimap, MapNode *nodes,
INodeDefManager *nodedef)
{
- memset(getBlockNodeIdMapping_mapping, 0xFF, USHRT_MAX * sizeof(content_t));
+ memset(getBlockNodeIdMapping_mapping, 0xFF, (USHRT_MAX + 1) * sizeof(content_t));
std::set<content_t> unknown_contents;
content_t id_counter = 0;