Fix OverflowSafeInt negation not handling INT64_MIN

See: https://github.com/OpenTTD/OpenTTD/issues/8284
2020-10-02 17:50:20 +01:00
parent 52c433d9a4
commit 609f37cef9
1 changed files with 1 additions and 1 deletions
--- a/src/core/overflowsafe_type.hpp
+++ b/src/core/overflowsafe_type.hpp
@@ -36,7 +36,7 @@ public:

 	inline OverflowSafeInt& operator = (const OverflowSafeInt& other) { this->m_value = other.m_value; return *this; }

-	inline OverflowSafeInt operator - () const { return OverflowSafeInt(-this->m_value); }
+	inline OverflowSafeInt operator - () const { return OverflowSafeInt(this->m_value == T_MIN ? T_MAX : -this->m_value); }

 	/**
 	 * Safe implementation of addition.