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digitalmars.D.bugs - [Issue 3977] New: Should disable implicit conversion of B[] to A[] when B is derived from A

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=3977

           Summary: Should disable implicit conversion of B[] to A[] when
                    B is derived from A
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: bugzilla digitalmars.com


--- Comment #0 from Walter Bright <bugzilla digitalmars.com> 2010-03-16
14:17:50 PDT ---
This exposes a potential memory corruption problem:

class A {}
class B : A {}
void proc(A[] x, A y) {
    x[0] = y;
}
void main() {
    B[] anArrayOfB = new B[5];
    A a = new A();
    proc(anArrayOfB, a);
}

The solution is to disable implicit conversion of B[] to A[], but B[] to
const(A)[] and immutable(B)[] to immutable(A)[] should be allowed.

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=3977


Steven Schveighoffer <schveiguy yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |schveiguy yahoo.com
         Resolution|                            |DUPLICATE


--- Comment #1 from Steven Schveighoffer <schveiguy yahoo.com> 2010-03-16
14:23:00 PDT ---
Been around for a while.

*** This issue has been marked as a duplicate of issue 2095 ***

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