[Webkit-unassigned] [Bug 72862] New: [Mac] heck-for-weak-vtables-and-externals should ignore symbols from system headers.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=72862

           Summary: [Mac] heck-for-weak-vtables-and-externals should
                    ignore symbols from system headers.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: morrita at google.com
            Blocks: 67852


heck-for-weak-vtables-and-externals should ignore symbols from system headers
because the system header forces them to export and we cannot control it 
when we use WTF_EXPORT-based symbol visibility control.

For example, /usr/include/c++/4.2.1/new contains following line:
#pragma GCC visibility push(default)

Fortunately JSC depends on very few such C++ symbols so I think this relaxation doesn't harm.

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