Re: [Xen-devel] [PATCH 11 of 18] tools/libxl: fix build errors caused by Werror in disk_eject_xswatch_callback

[Olaf Hering <olaf@xxxxxxxxx>]

On Mon, Apr 02, Ian Jackson wrote:

> Olaf Hering writes ("[Xen-devel] [PATCH 11 of 18] tools/libxl: fix build 
> errors caused by Werror in disk_eject_xswatch_callback"):
> > tools/libxl: fix build errors caused by Werror in 
> > disk_eject_xswatch_callback
> > 
> > -O2 -Wall -Werror triggers these warnings:
> > 
> > libxl.c: In function 'disk_eject_xswatch_callback':
> > libxl.c:928: warning: zero-length printf format string
> 
> There is nothing wrong with zero-length format strings.  This warning
> should be disabled.  Please do send a patch to do so.

-Wno-format-zero-length -Wall has no effect, and -Wall comes from
RPM_OPT_FLAGS which will come last with my current EXTRA_CFLAGS patch.

Olaf

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