[vlc-devel] [PATCH] skins2: os2: save and restore FPU cw

[KO Myung-Hun]

Backport to 2.1 tree, please...

KO Myung-Hun wrote:
> WinCreateMsgQueue() changes FPU cw but does not restore it. This causes
> SIGFPE later.
> ---
>  modules/gui/skins2/os2/os2_factory.cpp |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/modules/gui/skins2/os2/os2_factory.cpp b/modules/gui/skins2/os2/os2_factory.cpp
> index 61170eb..2cbfb85 100644
> --- a/modules/gui/skins2/os2/os2_factory.cpp
> +++ b/modules/gui/skins2/os2/os2_factory.cpp
> @@ -31,6 +31,7 @@
>  #include <io.h>
>  #include <sys/types.h>
>  #include <sys/stat.h>
> +#include <cfloat>
>  
>  #include "os2_factory.hpp"
>  #include "os2_graphics.hpp"
> @@ -169,8 +170,16 @@ bool OS2Factory::init()
>      MorphToPM();
>  
>      m_hab = WinInitialize( 0 );
> +
> +    // save FPU CW
> +    unsigned saved_cw = _control87( 0, 0 );
> +
> +    // WinCreateMsgQueue() changes FPU CW but does not restore it
>      m_hmq = WinCreateMsgQueue( m_hab, 0 );
>  
> +    // restore FPU CW
> +    _control87( saved_cw, MCW_EM | MCW_IC | MCW_RC | MCW_PC );
> +
>      if( !WinRegisterClass( m_hab, vlc_class, OS2Factory::OS2Proc,
>                             CS_SIZEREDRAW, sizeof( PVOID )))
>      {

-- 
KO Myung-Hun

Using Mozilla SeaMonkey 2.7.2
Under OS/2 Warp 4 for Korean with FixPak #15
In VirtualBox v4.1.32 on Intel Core i7-3615QM 2.30GHz with 8GB RAM

Korean OS/2 User Community : http://www.ecomstation.co.kr

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