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digitalmars.D.bugs - [Issue 8861] New: compiler should inform as "... can't return lvalue " but crush because of Internal error

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8861

           Summary: compiler should inform as "... can't return lvalue "
                    but crush because of Internal error
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: hotcocoamix gmail.com


--- Comment #0 from hotcocoamix gmail.com 2012-10-21 01:35:20 PDT ---
I think it should be informed as
 " width(height) can not return lvalue. "

dmd(2.060) returned 
 " Internal error: ../ztc/cgcs.c 343 "

the example is follows:

class C{
    private int[2] mysize; 

    // The wrong spelling of "mysize".
    // but is not error but crash.
    auto ref width(){    return this.size[0];    }
    auto ref height(){    return this.size[1];    }

    // getter and setter 
     property{
        int[2] size(){    return this.mysize;    }
        int[2] size( in int[2] xy ){
            this.mysize = xy;
            return xy;
        }
    }
}

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8861


Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andrej.mitrovich gmail.com
            Summary|compiler should inform as   |ICE: ../ztc/cgcs.c 343
                   |"... can't return lvalue "  |
                   |but crush because of        |
                   |Internal error              |
           Severity|normal                      |major


--- Comment #1 from Andrej Mitrovic <andrej.mitrovich gmail.com> 2012-10-21
13:35:15 PDT ---
Interesting, only seems to happen when array is length 2 or less:

OK:

int[3] mysize;
 property auto size() { return mysize; }
int width() { return size[0]; }
void main() { }

FAIL:

int[2] mysize;
 property auto size() { return mysize; }
int width() { return size[0]; }
void main() { }

I've changed the title to make it more searchable for others. High priority
since ICEs are important.

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--- Comment #2 from Andrej Mitrovic <andrej.mitrovich gmail.com> 2013-01-02
17:15:30 PST ---
New test-case, the error message seems to suggest it's related (line numbers
are similar):

struct S
{
    ~this() { }
}

mixin template templ()
{
    auto s = S();
}

void main()
{
    mixin templ;
}

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--- Comment #3 from Andrej Mitrovic <andrej.mitrovich gmail.com> 2013-01-02
17:15:52 PST ---
(In reply to comment #2)

 New test-case, the error message seems to suggest it's related (line numbers
 are similar):


And error:
Internal error: ..\ztc\cgcs.c 344

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prev sibling parent d-bugmail puremagic.com writes:
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Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |WORKSFORME


--- Comment #4 from Walter Bright <bugzilla digitalmars.com> 2013-10-01
23:41:17 PDT ---
I cannot reproduce this with dmd 2.063 or later.

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