'variable' : definition from the for loop is ignored; the definition from the enclosing scope is used"
Under /Ze and /Zc:forScope, variables defined in a for loop go out of scope after the for loop ends. This warning occurs if a variable with the same name as the loop variable, but defined in the enclosing loop, is used again in the scope containing the for loop. For example:
void main() { int i; { for (int i =0; i < 1; i++) ; i = 20; // i (in for loop) has gone out of scope } }