[Webkit-unassigned] [Bug 266254] New: MUST_TAIL_CALL C++ attribute causes clang crash on 32-bit ARM

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=266254

            Bug ID: 266254
           Summary: MUST_TAIL_CALL C++ attribute causes clang crash on
                    32-bit ARM
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: uint2048 at icloud.com

https://github.com/llvm/llvm-project/issues/67767

The optimization in https://github.com/WebKit/WebKit/pull/15830 apparently does not compile for armv7 due to a Clang compiler bug.

I propose ensuring __arm__ is not defined to work around this issue unless this bug is fixed since WebKit still has an armv7 build.

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