http://d.puremagic.com/issues/show_bug.cgi?id=7120

           Summary: Scope Delegates + Delegate Literals
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: performance
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: dsimcha@yahoo.com


--- Comment #0 from David Simcha <dsimcha@yahoo.com> 2011-12-16 11:23:57 PST ---
The following code apparently heap-allocates a closure even though doNothing() takes a scope delegate.  This happens when doNothing() is passed a delegate literal.  When it's passed the address of a named inner function, no heap allocation takes place.

import core.memory;

void main() {
    GC.disable();

    foreach(j; 0..1_000_000_000) {
        doIt();
    }
}

void doIt() {
    int i;
    doNothing(() { i++; });
}

void doNothing(scope void delegate() dg) {
    dg();
}

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


--- Comment #1 from Kenji Hara <k.hara.pg@gmail.com> 2012-01-02 01:22:04 PST ---
https://github.com/D-Programming-Language/dmd/pull/598

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> 2012-01-06 10:41:20 PST ---
https://github.com/D-Programming-Language/dmd/commit/f19992a6ac4dde4d16db61104bebc9303173518d

https://github.com/D-Programming-Language/dmd/commit/21ce18fbc1241d4fbe06c2d78dd2114c4924b35a

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