This bug was originally reported as part of bug 3174.

int goo(int i) pure { return i; } // OK
auto foo(int i) pure { return i; } // Can't parse

class A {
    auto hoo(int i) pure  { return i; }  // can't parse
    const boo(int i) const { return i; }  // can't parse
    auto coo(int i) const { return i; }  // can't parse
    auto doo(int i) immutable { return i; }  // can't parse
}