Struct in forall cannot have member named same as an assertion

[mlbrooks]

Code:

forall ( dtype T | { int x; } ) {
    struct S {
      #ifndef NOBUG
        int x;
      #endif
    };
    void ?{}( S(T) & ) {
        printf("%d\n", x);
    }
}

int main() {
    int x = 37;
    printf("%d\n", x);

    S(float) s;
}

Expect: Plain compile succeeds and runs with output

37
37

Actual a: Plain compile fails with

error: duplicate object definition for x: signed int

Actual b: Compile -DNOBUG behaves as expected for plain.

Note that the type parameter on S is not used. It's included as a workaround for #185.