Compiler Warning (level 3) C4557


For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

'__assume' contains effect 'effect'

The value passed to an __assume statement2 was modified.

This warning is off by default. See Compiler Warnings That Are Off by Default for more information.

The following sample generates C4557:

// C4557.cpp  
// compile with: /W3  
#pragma warning(default : 4557)  
int main()  
   int i;  
   __assume(i++);   // C4557