[Webkit-unassigned] [Bug 161866] New: Undefined behavior: Left shift negative number

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161866

            Bug ID: 161866
           Summary: Undefined behavior: Left shift negative number
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jbedard at apple.com

Left shifting a negative number is undefined behavior in C/C++, although most implementations do defined this behavior.

The following files left shift negative numbers:
JavaScriptCore/dfg/DFGAbstractHeap.h

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