[Issue 8564] New: Ambiguous renamed import is allowed

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8564

           Summary: Ambiguous renamed import is allowed
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: maxim at maxim-fomin.ru


--- Comment #0 from Maxim Fomin <maxim at maxim-fomin.ru> 2012-08-20 03:32:46 PDT ---
Currently dmd accepts renamed import with local name,
which hijacks current module name and creates ambiguity.

in foo2.d:

module foo2;
import std.stdio;

void bar()
{
    writeln("foo2");
}

in foo1.d:

module foo1;
import foo1 = foo2; //#1 hijack 
import std.stdio;

void bar()
{
    writeln("foo1");
}

int x;

void main()
{
    foo1.bar(); // #2 ambiguous call is accepted
    writeln(foo1.x); // #3, Error: undefined identifier 'x'
}

I think either #1 should be prohibited or #2 result in 
"ambiguous call" error. Also, #3 should compile, because
x is defined in foo1.d

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