[Webkit-unassigned] [Bug 190405] New: Changes towards allowing use of the ASAN detect_stack_use_after_return option.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190405

            Bug ID: 190405
           Summary: Changes towards allowing use of the ASAN
                    detect_stack_use_after_return option.
           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

The ASAN detect_stack_use_after_return options makes a assumptions about how code should behave that does not jive well with how a VM needs to operate.  In order to enable the use of detect_stack_use_after_return, we'll need to suppress ASAN in any function that takes the address of a variable in the current stack frame.  

We have not yet isolated all the places where we need to apply workarounds needed for ASAN detect_stack_use_after_return, but this patch for landing what we have found so far.

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