• d-bugmail puremagic.com Apr 26 2008

http://d.puremagic.com/issues/show_bug.cgi?id=2043

           Summary: Closure outer variables in nested blocks are not
                    allocated/instantiated correctly.
           Product: D
           Version: 2.012
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: brunodomedeiros+bugz gmail.com


An outer variable declared in a nested (and scoped) block that is captured by a
closure will be allocated on the heap, but only once per function execution,
instead of once per block execution, which is what makes sense.
See code below:

--- ---
void delegate()[] dgList;

void test() {

        foreach(int i; [1, 2, 3]) {
                int b = 2;
                dgList ~= { writefln(b); };
                writefln(&b); // b will be the *same* on each iteration
        }
}
---


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