[Issue 2755] New: ICE on invalid ref returns in linked objects: Assertion failure: 'type' on line 6566 in file 'expression.c'. No ICE or error if invalid code is local to the file.

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=2755

           Summary: ICE on invalid ref returns in linked objects: Assertion
                    failure: 'type' on line 6566 in file 'expression.c'. No
                    ICE or error if invalid code is local to the file.
           Product: D
           Version: 2.025
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: ice-on-invalid-code
          Severity: minor
          Priority: P3
         Component: DMD
        AssignedTo: bugzi...@digitalmars.com
        ReportedBy: sandf...@jhu.edu


An internal compiler error (ICE) occurs when an invalid ref return defined in
another object (i.e. linked) is accessed. This error disappears (and no warning
given) if the invalid ref returns are in the same object.

Specifically
Assertion failure: 'type' on line 6566 in file 'expression.c'
is reported and then an abnormal program termination occurs.

Test code
---
module a;
import b;

void main() {
    myClass mc;
    myStruct ms;
    mc.self;       // ICE
    ms.self;       // ICE
    myFunc();      // ICE
}
---
module b;

class myClass {
    ref self() { return this; }
}

struct myStruct {
    ref self() { return this; }
}

int y = 0;
ref myFunc() {return y;}


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