[Issue 2934] New: "".dup does not return empty string

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2934

           Summary: "".dup does not return empty string
           Product: D
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: qian.xu at funkwerk-itk.com


The following code will throw an exception: 
  char[] s;
  assert( s.dup  is null); // OK
  assert("".dup !is null); // FAILED

"".dup is expectly also an empty string.

Confirmed with dmd v1, gdc


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