[Webkit-unassigned] [Bug 45669] New: ARMv7Assembler generates illegal instructions with RVCT

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45669

           Summary: ARMv7Assembler generates illegal instructions with
                    RVCT
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Other
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dtapuska at rim.com
                CC: staikos at kde.org


Using RVCT to compile ARMv7Assembler illegal instructions occur because the ShiftTypeAmount class does not zero initialize all bits in the union. The type and amount values take up 7 bits leaving an extra unassigned bit in the union. GCC zero initializes bitfields but RVCT does not.

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