[libvirt] [PATCH] domsuspend: Fix warning on mingw build

[Michal Privoznik]

On 10.02.2016 19:44, Andrea Bolognani wrote:
> Commit d82170d introduced a workaround for domtop: in that example
> program, we define a symbol called ERROR for our own use, but since
> a symbol with the same name is already defined in one of mingw's
> header files, we get a warning when using that compiler.
> 
> domsuspend defines the same problematic symbol, so the workaround
> has been copied over.
> ---
>  examples/domsuspend/suspend.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/examples/domsuspend/suspend.c b/examples/domsuspend/suspend.c
> index 11f7302..3e3f70e 100644
> --- a/examples/domsuspend/suspend.c
> +++ b/examples/domsuspend/suspend.c
> @@ -34,6 +34,21 @@
>  
>  static int debug;
>  
> +/* On mingw, there's a header file that poisons the well:
> + *
> + *
> + *  CC       domtop.o
> + *domtop.c:40:0: warning: "ERROR" redefined [enabled by default]
> + * #define ERROR(...)                                              \
> + * ^
> + *In file included from /usr/i686-w64-mingw32/sys-root/mingw/include/windows.h:71:0,
> + *                 from /usr/i686-w64-mingw32/sys-root/mingw/include/winsock2.h:23,
> + *                 from ../../gnulib/lib/unistd.h:48,
> + *                 from domtop.c:35:
> + * /usr/i686-w64-mingw32/sys-root/mingw/include/wingdi.h:75:0: note: this is the location of the previous definition
> + * #define ERROR 0
> + */
> +#undef ERROR
>  #define ERROR(...)                                              \
>  do {                                                            \
>      fprintf(stderr, "ERROR %s:%d : ", __FUNCTION__, __LINE__);  \
> 

ACK

Michal