Compiler Warning (level 4) C4296
Visual Studio 2015
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The latest version of this topic can be found at Compiler Warning (level 4) C4296.
operator' : expression is always false
An unsigned variable was used in a comparison operation with zero.
This warning is off by default. See Compiler Warnings That Are Off by Default for more information.
The following sample generates C4296:
// C4296.cpp
// compile with: /W4
#pragma warning(default : 4296)
int main()
{
unsigned int u = 9;
if (u < 0) // C4296
u++;
if (u >= 0) // C4296
u++;
}
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