Compiler Warning (Level 1) C4739

reference to variable 'var' exceeds its storage space

A value was assigned to a variable, but the value is greater than the size of the variable. Memory will be written beyond the variable's memory ___location, and data loss is possible.

To resolve this warning, only assign a value to a variable whose size can accommodate the value.

The following sample generates C4739:

// C4739.cpp
// compile with: /RTCs /Zi /W1 /c
char *pc;
int main() {
   char c;
   *(int *)&c = 1;   // C4739

   // OK
   *(char *)&c = 1;
}