[PATCH v2] Support %m in printf functions

Corinna Vinschen vinschen@redhat.com
Mon Jan 9 11:52:00 GMT 2012

On Jan  6 01:00, Yaakov (Cygwin/X) wrote:
> On Sun, 2012-01-01 at 11:59 -0600, Yaakov (Cygwin/X) wrote:
> > This patch adds support for the "%m" conversion specifier in the printf
> > and wprintf functions, a GNU extension:
> > 
> > http://www.kernel.org/doc/man-pages/online/pages/man3/printf.3.html
> Thank you all for the comments.  The attached revised patch and STC
> should take them into account.
> The remaining issue is that of gating, specifically exactly how to do
> so.  For the moment I'm using __CYGWIN__ until some agreement can be
> reached.

Jeff, I'd like to get your input on this.

IMHO, it doesn't feel right to add __CYGWIN__ here since the %m
functionality is sufficiently target agnostic to be useful for everyone
who would like to use it.  I guess _GLIBC_EXTENSION sounds about right,
but maybe it should be _NO_GLIBC_EXTENSIONS instead and only set it
for builds which explicitely don't want them?


Corinna Vinschen
Cygwin Project Co-Leader
Red Hat

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