[Webkit-unassigned] [Bug 189542] New: [Win][Clang] error: non-constant-expression cannot be narrowed from type 'int' to 'SHORT'

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189542

            Bug ID: 189542
           Summary: [Win][Clang] error: non-constant-expression cannot be
                    narrowed from type 'int' to 'SHORT'
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Hironori.Fujii at sony.com
            Blocks: 171618

[Win][Clang] error: non-constant-expression cannot be narrowed from type 'int' to 'SHORT'

While trying to build WebKit WinCairo port with the latest Clang (Bug 171618),
the following compilation errors are reported.

> [4/664] Building CXX object Source\WebCore\CMakeFiles\WebCore.dir\platform\graphics\win\IntPointWin.cpp.obj
> FAILED: Source/WebCore/CMakeFiles/WebCore.dir/platform/graphics/win/IntPointWin.cpp.obj 
> C:\tools\llvm\bin\clang-cl.exe (...) -c ..\..\Source\WebCore\platform\graphics\win\IntPointWin.cpp
> ..\..\Source\WebCore\platform\graphics\win\IntPointWin.cpp(56,17):  error: non-constant-expression cannot be narrowed from type 'int' to 'SHORT' (aka 'short') in initializer list [-Wc++11-narrowing]
>     POINTS p = {m_x, m_y};
>                 ^~~
> ..\..\Source\WebCore\platform\graphics\win\IntPointWin.cpp(56,17):  note: insert an explicit cast to silence this issue
>     POINTS p = {m_x, m_y};
>                 ^~~
>                 static_cast<SHORT>( )
> ..\..\Source\WebCore\platform\graphics\win\IntPointWin.cpp(56,22):  error: non-constant-expression cannot be narrowed from type 'int' to 'SHORT' (aka 'short') in initializer list [-Wc++11-narrowing]
>     POINTS p = {m_x, m_y};
>                      ^~~
> ..\..\Source\WebCore\platform\graphics\win\IntPointWin.cpp(56,22):  note: insert an explicit cast to silence this issue
>     POINTS p = {m_x, m_y};
>                      ^~~
>                      static_cast<SHORT>( )
> 2 errors generated.

> [15/31] Building CXX object Source\WebKit\CMakeFiles\WebKit.dir\UIProcess\win\WebInspectorProxyWin.cpp.obj
> FAILED: Source/WebKit/CMakeFiles/WebKit.dir/UIProcess/win/WebInspectorProxyWin.cpp.obj 
> C:\tools\llvm\bin\clang-cl.exe (...) -c ..\..\Source\WebKit\UIProcess\win\WebInspectorProxyWin.cpp
> ..\..\Source\WebKit\UIProcess\win\WebInspectorProxyWin.cpp(234,22):  error: non-constant-expression cannot be narrowed from type 'unsigned int' to 'LONG' (aka 'long') in initializer list [-Wc++11-narrowing]
>     RECT r = { 0, 0, initialWindowWidth, initialWindowHeight };
>                      ^~~~~~~~~~~~~~~~~~
> ..\..\Source\WebKit\UIProcess\win\WebInspectorProxyWin.cpp(234,22):  note: insert an explicit cast to silence this issue
>     RECT r = { 0, 0, initialWindowWidth, initialWindowHeight };
>                      ^~~~~~~~~~~~~~~~~~
>                      static_cast<LONG>()
> ..\..\Source\WebKit\UIProcess\win\WebInspectorProxyWin.cpp(234,42):  error: non-constant-expression cannot be narrowed from type 'unsigned int' to 'LONG' (aka 'long') in initializer list [-Wc++11-narrowing]
>     RECT r = { 0, 0, initialWindowWidth, initialWindowHeight };
>                                          ^~~~~~~~~~~~~~~~~~~
> ..\..\Source\WebKit\UIProcess\win\WebInspectorProxyWin.cpp(234,42):  note: insert an explicit cast to silence this issue
>     RECT r = { 0, 0, initialWindowWidth, initialWindowHeight };
>                                          ^~~~~~~~~~~~~~~~~~~
>                                          static_cast<LONG>( )
> 2 errors generated.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=171618
[Bug 171618] [Win][Meta] Build WebKit using Clang
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