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Re: [Xen-devel] [PATCH 11 of 18] tools/libxl: fix build errors caused by Werror in disk_eject_xswatch_callback
Olaf Hering writes ("Re: [Xen-devel] [PATCH 11 of 18] tools/libxl: fix build
errors caused by Werror in disk_eject_xswatch_callback"):
> On Tue, Apr 03, Ian Campbell wrote:
> >  Even gcc(1) says:
> > -Wno-format-zero-length (C and Objective-C only)
> > If -Wformat is specified, do not warn about zero-length formats.
> > The C standard specifies that zero-length formats are allowed.
> > So quite why it appears that Wall is enabling Wformat-zero-length I have
> > no idea, this is a clear gcc bug in my opinion.
> Thats what they say:
> "<jakub> olaf_: warnings aren't just about things that aren't allowed in
> the standard, but about things considered bad by significant amount of
> So gcc wont be changed.
I haven't found anyone who can come up with a plausible reason to
think that a zero-length format string is wrong. But I don't want to
get into an argument with gcc upstream.
The right answer is to disable the warning, wherever it is being
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