struct A { int a; }; int foo (struct A *a) { static int c = 30; int x; a->a = c; /* Dominator optimizations will replace the use of 'a->a' with 'c', but they won't copy the virtual operands for 'c' from its originating statement. This exposes symbol 'c' without a correct SSA version number. */ x = a->a; return x; }