NGWS SDK Documentation  

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Compiler Warning (level 1) C4806

'operation' : unsafe operation: no value of type 'type' promoted to type 'type' can equal the given constant

This message warns against code such as b == 3, where b has type bool. The promotion rules cause bool to be promoted to int. This is legal, but it can never be true. The following sample generates C4806:

void main() {
   bool b = true;
   // try..
   // int b = true;

   if (b == 3) {      // C4806
      b = false;
   }
}