[Webkit-unassigned] [Bug 193379] New: va_start using non-POD-type

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Jan 12 03:26:35 PST 2019


            Bug ID: 193379
           Summary: va_start using non-POD-type
           Product: WebKit
           Version: Other
          Hardware: All
                OS: Other
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tk at giga.or.at

webkitgtk-2.22.25/Source/WebCore/platform/LocalizedStrings.cpp has as line 70

va_start(arguments, format);

The format argument is of type WTF::String.

clang 7.0.0 on NetBSD fails to compile this with the error message:

cannot pass object of non-trivial type 'WTF::String' through variadic function; call will abort at runtime [-Wnon-pod-varargs]

I've asked around and been told that the standard says that the argument must be a POD type, i.e. is not allowed to have a ctor or dtor, and that one possible workaround is to pass the argument as a pointer.

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