[Webkit-unassigned] [Bug 36901] New: RVCT generates incorrect code for method Range::operator== when compiler optimizations are enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=36901

           Summary: RVCT generates incorrect code for method
                    Range::operator== when compiler optimizations are
                    enabled
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dbates at webkit.org


As of RVCT 4.0 (build 697), the method Range::operator== is compiled
incorrectly with optimizations. In particular, the if-conditional "if (!&a ||
!&b)" seems to be optimized away.

This is problematic because VisibleSelection::toNormalizedRange() can return a
PassRefPtr<Range> to a null pointer by line 132
<http://trac.webkit.org/browser/trunk/WebCore/editing/VisibleSelection.cpp?rev=56825#L132>.

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