[Issue 5073] wrong file name in error message for "voids have no value" inside alias templates (affects std.algorithm.map)

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5073



--- Comment #3 from Rob Jacques <sandford at jhu.edu> 2011-01-20 09:33:15 PST ---
(In reply to comment #2)
> (In reply to comment #1)
> > In DMD 2.051, this error message has ceased to be generated for certain inputs
> > and instead a runtime access violation is generated. Here is a reduced test
> > case:
> > 
> > struct Bar(T) {
> >     T x;
> >     Bar dot(Bar b) { return Bar(x+b.x); }
> > }
> > 
> > void main(string[] args) {
> >     Bar!real   b;
> >     Bar!real[] data = new Bar!real[5];
> >     auto foobar  = map!((a){return a.dot(b); })(data);
> >     return;
> > }
> 
> I just tried the example above with 2.051. It compiles and runs. Could you
> please provide a different example? Thanks!

While it does compile on my system, when it runs it causes an "object.Error:
Access Violation". I'm on an Intel Core-i7 920 (Quad core) running Windows 7
64-bit. Just to double check, here is a more extensive version of the same test
which verifies the map is run correctly. 

void main(string[] args) {
    Bar!real   b = Bar!real(5);
    Bar!real[] data = new Bar!real[5];
    foreach(i,ref d;data)
        d.x = i;
    Bar!real[] expected = new Bar!real[5];
    foreach(i,ref e;expected)
        e = data[i].dot(b);
    auto foobar  = map!((a){return a.dot(b); })(data);
    foreach(z;zip(foobar,expected))
        assert(z[0].x == z[1].x);
    return;
}

Also, does the example from my first post compile & run for you?

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