On 02/09/2011 05:48 PM, Eric Blake wrote:
> POSIX requires that this program have an identical first and last line:
>
> #include <stdio.h>
> #include <string.h>
> #include <errno.h>
> int main (void) {
> char *err = strerror(1000);
> printf ("%s\n", err);
> errno = 2000;
> perror ("hi");
> printf ("%s\n", err);
> return 0;
> }
>
> but on cygwin 1.7.7, the perror() corrupts the buffer returned by
> strerror(). We should probably fix that in gnulib as part of our perror
> module.Actually, maybe the fix to this is to make sure that we always replace strerror(), and strcpy() the output into a secondary buffer (other libc functions that incorrectly call strerror() will not overwrite our secondary buffer), and make sure that the rest of gnulib uses only strerror_r() rather than strerror() (although that means making more modules dependent on strerror_r-posix, such as perror). -- Eric Blake ebl...@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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