[Issue 9767] New: Confusing compiler error generated when names collide across modules.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9767

           Summary: Confusing compiler error generated when names collide
                    across modules.
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: trivial
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrew.smith at uk.mlp.com


--- Comment #0 from Andrew Smith <andrew.smith at uk.mlp.com> 2013-03-20 11:10:22 PDT ---
If I create two modules which contain duplicate declarations....

a.d
=====================
module a;
import b;

import std.stdio;

void function() voidFun;

struct foo {
  typeof( voidFun ) onCb;
};

void myCb() {
  writefln("I've been called");
};

void main() {
  foo f = { &myCb };
  usefoo(f);
};


and b.d
=========================
module b;

void function() voidFun;

struct foo {
  typeof(voidFun) onCb;
};


void usefoo( foo f) {
  f.onCb();
};

==============================================

dmd produces following error message.

dmd -I. -c -ofa.o a.d
a.d(18): Error: function b.usefoo (foo f) is not callable using argument types
(foo)
a.d(18): Error: cannot implicitly convert expression (f) of type foo to foo
scons: *** [a.o] Error 1
scons: building terminated because of errors.


================================================

Obviously pilot error on my part but I'd argue the error message could be made
more helpful.

Cheers,

A.

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