[Webkit-unassigned] [Bug 157067] [WinCairo] Invalid address specified to RtlValidateHeap at std::ctype<char>::_Tidy() when finishing MiniBrowser

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157067

Fujii Hironori <Hironori.Fujii at sony.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |achristensen at apple.com,
                   |                            |bfulgham at webkit.org,
                   |                            |peavo at outlook.com

--- Comment #3 from Fujii Hironori <Hironori.Fujii at sony.com> ---
A DLL ucrtbased.dll is observed in the call stack of comment 0.
According to a following document, ucrtbased.dll is just for dynamically linked CRT.

  CRT Library Features
  https://msdn.microsoft.com/en-us/library/abx4dbyh.aspx

This is strange because WebKit is compiled with /MT switch to use static CRT.
By using "dumpbin /imports WebKit.dll", it can be observed that vcruntime140d.dll and ucrtbased.dll are linked.

In Source/WebKit/PlatformWin.cmake:

> if (${WTF_PLATFORM_WIN_CAIRO})
>     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /NODEFAULTLIB:LIBCMT /NODEFAULTLIB:LIBCMTD")
> else ()
>     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /NODEFAULTLIB:MSVCRT /NODEFAULTLIB:MSVCRTD")
> endif ()

LIBCMT and LIBCMTD are ignored for WinCairo port.
But, they are the static CRT.
This code have been introduced in Bug 147851.

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