[Issue 4834] New: Implicit sharing via delegates in std.concurrency

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4834

           Summary: Implicit sharing via delegates in std.concurrency
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: accepts-invalid
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: dsimcha at yahoo.com


--- Comment #0 from David Simcha <dsimcha at yahoo.com> 2010-09-06 19:26:07 PDT ---
The following code compiles and should not, because it allows implicit sharing
of data between threads in the supposedly safe std.concurrency:

import std.concurrency;

void runDelegate(void delegate() dg) {
    dg();
}

class Foo {
    uint num;

    void incNum() {
        num++;
    }
}

void main() {
    auto foo = new Foo;
    spawn(&runDelegate, &foo.incNum);
}

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