[Issue 10577] New: 2.063 Mixin Regression (works with 2.062)

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10577

           Summary: 2.063 Mixin Regression (works with 2.062)
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: puneet at coverify.org


--- Comment #0 from Puneet Goel <puneet at coverify.org> 2013-07-08 18:32:49 PDT ---
Here is the minimal code to reproduce.
Works with version 2.062. With version 2.063 and latest github snapshot, I get
an error:

test.d(37): Error: function test.derived.foo multiple overrides of same
function


// Code starts here
enum sync;

public template get_sync(size_t I, A...) {
  static if(I == A.length)           enum bool get_sync = false;
  else static if(is(A[I] == sync))   enum bool get_sync = true;
    else                             enum bool get_sync = get_sync!(I+1, A);
}

template add_sync(T, size_t ITER=0) {
  static if(ITER == (__traits(derivedMembers, T).length)) {
    enum string add_sync = "";
  } else {
    enum string mem = __traits(derivedMembers, T)[ITER];
    enum string add_sync =
      "static if(! __traits(isVirtualMethod, " ~ mem ~ ")) {" ~
      "mixin(add_sync!(get_sync!(0, __traits(getAttributes, "
      ~ mem ~ ")), \"" ~ mem ~ "\"));} " ~ add_sync!(T, ITER+1);
  }
}

template add_sync(bool A, string M) {
  static if(A) {
    enum string add_sync = " auto " ~ M[1..$] ~
      "() {synchronized(this) return " ~ M ~ ";}";
  } else {
    enum string add_sync = "";
  }
}

class base {
  public void foo() {}
}

class derived : base {
  mixin(add_sync!(derived));
  @sync private bool _bar;
  public override void foo() {}
}

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