Bug#165554: __ctype_b symbol no longer available?

[Daniel Jacobowitz <dan@debian.org>]

On Sun, Oct 20, 2002 at 11:16:45PM +0900, Fumitoshi UKAI wrote:
> At Sun, 20 Oct 2002 06:18:08 -0700,
> Jeff Bailey wrote:
> > 
> > On Sun, Oct 20, 2002 at 08:00:29PM +0900, Junichi Uekawa wrote:
> > 
> > > /home/takuo/work/debian/ppxp-0.2001080415/lib/ppxp.c:473: undefined reference to `__ctype_b'
> > > collect2: ld returned 1 exit status
> > > make[3]: *** [ppxp-applet] Error 1
> > > make[3]: Leaving directory `/tmp/buildd/ppxp-applet-0.8.1/src'
> > > make[2]: *** [all-recursive] Error 1
> > > make[2]: Leaving directory `/tmp/buildd/ppxp-applet-0.8.1'
> > 
> > Can you provide a small sample program that shows how it's being used?
> > Having a testcase will let me figure out whether or not the program is
> > doing the right thing or not.
> 
> Build libfoo.a on libc6 2.2.5 from foo.c as follows:
> 
> % cat foo.c 
> #include <ctype.h>
> 
> int
> foo(int c)
> {
>         return isdigit(c);
> }
> 
> % cc -o foo.o -c foo.c
> % ar ruv libfoo.a foo.o
> 
> and copy libfoo.a to libc6 2.3.1 environment.
> 
> On libc6 2.3.1:
> 
> % cat bar.c
> #include <stdio.h>
> 
> extern int foo(int c);
> 
> int
> main(int argc, char *argv[])
> {
>         printf("%d\n", foo(*argv[1]));
>         exit(0);
> }
> % cc -o bar bar.c libfoo.a
> libfoo.a(foo.o)(.text+0xa): In function `foo':
> : undefined reference to `__ctype_b'
> collect2: ld returned 1 exit status
> 
> Of course, libfoo.a is rebuilt on libc6 2.3.1, there are no problem.
> 
> Thanks,
> Fumitoshi UKAI

I sent the workaround for this to this list but no one seems to have
noticed it.  Jeff, you might want to look at it.  It was a forwarded
message from Roland and a pointer to a patch in the Red Hat glibc
packaging.  October 7th.

This will also probably fix the static-binary-NSS-compatibility problem.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer