[Issue 9332] New: [REG][2.061 -> 02.061a] struct constructor taking itself creates "Warning: statement is not reachable"

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9332

           Summary: [REG][2.061 -> 02.061a] struct constructor taking
                    itself creates "Warning: statement is not reachable"
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: monarchdodra at gmail.com


--- Comment #0 from monarchdodra at gmail.com 2013-01-17 08:04:46 PST ---
Most probably *just* introduced: the packaged 2.061 doesn't create this, but
the latest githead produces the bug.

Produced with dmd with both debug and release. win32 on a win7_64.

//----
Program:
//----
struct S
{
    this(S) // <- Line 3 here
    {
        assert(0, "unreachable?");
    }
}

void main()
{
    S a;
    S b = S(a);
}
//----

//----
Compiler switch:
//----
rdmd -wi -O main.d
//----

//----
Compiler output
//----
main.d(3): Warning: statement is not reachable
//----

The irony here is that running the program gives:
//----
core.exception.AssertError at main.d(5): unreachable?
//----

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