gcc/testsuite/g++.dg/ext/lvalue1.C

   1 // Test that we complain about the gcc cast-as-lvalue extension.
   2
   3 int main ()
   4 {
   5   char c;
   6
   7   static_cast<int>(c) = 2; // { dg-error "lvalue" "not an lvalue" { xfail *-*-* } }
   8
   9   return c != 2;
  10 }