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Fix safe integer subtraction check

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This commit is contained in:
Lee Clagett
2025-05-27 21:32:40 -04:00
parent fc2da08753
commit cfac203297
1 changed files with 1 additions and 1 deletions
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src/numeric.h
+1 -1
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@@ -75,7 +75,7 @@ namespace lwsf { namespace internal
safe_integer& subtract(safe_integer rhs)
{
if (value_ - std::numeric_limits<T>::min() < rhs.value_)
if ((0 < rhs.value_ && value_ < std::numeric_limits<T>::min() < rhs.value_) || (rhs.value_ < 0 && value_ > std::numeric_limits<T>::max() + rhs.value_))
throw std::underflow_error{"safe_integer underflow in subtraction"};
value_ -= rhs.value_;
return *this;