[Issue 4867] New: Postblit is not usable with const objects

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4867

           Summary: Postblit is not usable with const objects
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: samukha at voliacable.com


--- Comment #0 from Max Samukha <samukha at voliacable.com> 2010-09-14 12:32:35 PDT ---
struct S
{
    this(this)
    {
    }
}

void foo(ref const S s)
{
    auto s2 = s;
}

void main()
{  
}

Error: function test.S.__cpctor (ref S p) is not callable using argument types
(const(S)) const

It is not specified how postblit is supposed to interoperate with
const/immutable. Tagging the postblit function with 'const' doesn't help
(compilation fails with the same error).

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