# MutantHub mutant #2153: Arithmetic operator mutation at txgraph.cpp:3231
# Repository: bitcoin/bitcoin @ ca45461ddb2421b4267dad0b7d7bcec88c07eba4
# File: src/txgraph.cpp:3231-3231
# Review: APPROVED; outcome: KILLED
--- a/src/txgraph.cpp
+++ b/src/txgraph.cpp
@@ -3231,1 +3231,1 @@
-    --m_graph->m_main_chunkindex_observers;
+    ++m_graph->m_main_chunkindex_observers;