[Webkit-unassigned] [Bug 195181] New: cloop.rb shift mask should depend on the word size being shifted.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Feb 28 12:29:41 PST 2019


https://bugs.webkit.org/show_bug.cgi?id=195181

            Bug ID: 195181
           Summary: cloop.rb shift mask should depend on the word size
                    being shifted.
           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: mark.lam at apple.com

Previously, we're always masking the shift amount with 0x1f.  This only works for 32-bit words.  For 64-bit words, the mask should be 0x3f.  For intptr_t shifts, the mask depends on sizeof(uintptr_t).

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