[Issue 1700] New: ICE attempting to modify member of const return struct

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1700

           Summary: ICE attempting to modify member of const return struct
           Product: D
           Version: 2.008
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: wbaxter at gmail.com


module conststructreturn;
import std.stdio;

struct Strukt {
    int value = 10;

    int opPostInc() {
        value++;
        return value;
    }
}

class Klass {
    const(Strukt) opIndex(int i) { return Strukt(i*i); }
}

void main()
{
    auto k = new Klass;
    k[4]; //ok
    k[4]++; // ok -- (compiler error)
    writefln(k[4].value); // OK
    k[4].value = 1; // CRASH
    k[4].value += 1; // CRASH
    k[4].value++; // CRASH
}


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