# MutantHub mutant #3944: Custom mutation at validation.cpp:639
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:639-639
# Review: APPROVED; outcome: SURVIVED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -639,1 +639,1 @@
-        int64_t m_vsize;
+        uint32_t m_vsize;