[Webkit-unassigned] [Bug 157382] New: Build failure with clang on Linux

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157382

            Bug ID: 157382
           Summary: Build failure with clang on Linux
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: krejzi at email.com
                CC: bugs-noreply at webkitgtk.org

When building webkitgtk-2.12.2 with clang 3.9.0 (trunk 268575) and using libc++ as the default C++ library, webkitgtk build fails with the following error:

In file included from <built-in>:1:
In file included from /sources/webkitgtk-2.12.2/Source/WebKit2/WebKit2Prefix.h:69:
In file included from /usr/bin/../include/c++/v1/algorithm:631:
/usr/bin/../include/c++/v1/type_traits:1331:59: error: incomplete type 'WebCore::IDBRequestData' used in type trait expression
    : public integral_constant<bool, __is_base_of(_Bp, _Dp)> {};
                                                          ^
/usr/bin/../include/c++/v1/type_traits:543:37: note: in instantiation of template class 'std::__1::is_base_of<std::__1::allocator_arg_t, WebCore::IDBRequestData>' requested
      here
struct __lazy_and : __lazy_and_impl<_P1::type::value, _Pr...> {};
                                    ^
/usr/bin/../include/c++/v1/tuple:664:9: note: in instantiation of template class 'std::__1::__lazy_and<std::__1::is_base_of<std::__1::allocator_arg_t, WebCore::IDBRequestData>,
      std::__1::__lazy_all<std::__1::__dependent_type<std::__1::is_default_constructible<const WebCore::IDBRequestData &>, true>,
      std::__1::__dependent_type<std::__1::is_default_constructible<const WebCore::IDBObjectStoreInfo &>, true> > >' requested here
        __lazy_and<
        ^
/usr/bin/../include/c++/v1/tuple:670:5: note: in instantiation of default argument for 'tuple<WebCore::IDBRequestData, WebCore::IDBObjectStoreInfo, true>' required here
    tuple(_AllocArgT, _Alloc const& __a)
    ^~~~~
/sources/webkitgtk-build/DerivedSources/WebKit2/WebIDBConnectionToClientMessages.h:180:11: note: while substituting deduced template arguments into function template 'tuple'
      [with _AllocArgT = WebCore::IDBRequestData, _Alloc = WebCore::IDBObjectStoreInfo, _Dummy = (no value), $3 = (no value)]
        : m_arguments(requestData, info)
          ^
/sources/webkitgtk-2.12.2/Source/WebKit2/DatabaseProcess/IndexedDB/WebIDBConnectionToClient.h:40:7: note: forward declaration of 'WebCore::IDBRequestData'
class IDBRequestData;
      ^
1 error generated.

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