[Issue 22768] New: lazy does not cache its results

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22768

          Issue ID: 22768
           Summary: lazy does not cache its results
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: temtaime at gmail.com

import std;

void foo(lazy string s) 
{
    s.writeln;
    s.writeln;
}

void main()
{
    foo(() { 1.writeln; return `abc`; }());
}

This simple program outputs:
1
abc
1
abc

It should output instead:
1
abc
abc

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