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January 24, 2013
[Issue 9383] New: Wrong context for contracts if closure [dis]appears in override function
http://d.puremagic.com/issues/show_bug.cgi?id=9383

          Summary: Wrong context for contracts if closure [dis]appears in
                   override function
          Product: D
          Version: D2
         Platform: All
       OS/Version: All
           Status: NEW
         Keywords: wrong-code
         Severity: major
         Priority: P2
        Component: DMD
       AssignedTo: nobody@puremagic.com
       ReportedBy: verylonglogin.reg@gmail.com


--- Comment #0 from Denis Shelomovskij <verylonglogin.reg@gmail.com> 2013-01-24 11:24:55 MSK ---
---
import std.stdio;

void delegate() del;

abstract class A
{
   void f(int i)
   in { writeln("A.f.in: i = ", i); }
   body { } // no closure 

   void g(int i)
   in { writeln("A.g.in: i = ", i); }
   body { int x; del = { ++x; }; } // closure 
}

final class B: A
{
   override void f(int i)
   in { writeln("B.f.in: i = ", i); }
   body { int x; del = { ++x; }; } // closure appears

   override void g(int i)
   in { writeln("B.g.in: i = ", i); }
   body { } // closure disappears
}

void main()
{
   auto b = new B();
   b.f(107);
   b.g(108);
}
---

Output:
---
A.f.in: i = 909192741
A.g.in: i = 10428304
---

Also see Issue 6417.

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