Bug 3916 – opEquals for objects does not respect const

Example: class C { int x; bool opEquals(Object d) {++x; return false;} } void main() { const c1= new C; const c2= new C; assert(c1 != c2); assert(c1.x == 1); } This should fail to compile. I'm unsure what the correct signature for opEquals should be, but I'd expect it to be something like: bool opEquals(const Object other) const; With the global function being changed to: bool opEquals(const Object lhs, const Object rhs); This may limit the ability to run cached calculations in the objects themselves during comparisons, but I think this situation could be worked around with casts.

*** This issue has been marked as a duplicate of issue 1824 ***