[Webkit-unassigned] [Bug 34800] New: StructureTransitionTable.h fails to compile under VS2010 RC

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34800

           Summary: StructureTransitionTable.h fails to compile under
                    VS2010 RC
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Keywords: PlatformOnly
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at apple.com
                CC: sfalken at apple.com


StructureTransitionTable.h fails to compile under VS2010 RC. The Transition(0,
structure) and Transition(structure, 0) expressions generate a C2664 error
about not being able to convert int to Structure*. The ints in question are the
0s in the expressions.

This is a known bug in C++0x [1] and VS2010 RC [2]. It will apparently be fixed
by the introduction of concepts to the STL [3].

In the meantime, we can work around the issue by either changing the 0s to
nullptrs (which only works in C++0x, though obviously a macro could be used to
make it work in older versions of C++), or by wrapping them in
reinterpret_cast<Structure*>().

1. http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#811
2.
https://connect.microsoft.com/VisualStudio/feedback/details/505476/problem-with-std-pair-int-std-string-constructor?wa=wsignin1.0
3. http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2770.pdf

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