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Fix last change

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And optimize a bit.
This commit is contained in:
Ulrich Drepper 2011-05-21 16:19:06 -04:00
parent 7ea72f9996
commit adcd5c15d2
1 changed files with 11 additions and 16 deletions
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27
string/xpg-strerror.c
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@ -19,20 +19,10 @@
#include <assert.h>
#include <errno.h>
#include <libintl.h>
#include <stdio.h>
#include <string.h>
#include <sys/param.h>
#include <stdio-common/_itoa.h>
/* It is critical here that we always use the `dcgettext' function for
the message translation. Since <libintl.h> only defines the macro
`dgettext' to use `dcgettext' for optimizing programs this is not
always guaranteed. */
#ifndef dgettext
# include <locale.h> /* We need LC_MESSAGES. */
# define dgettext(domainname, msgid) dcgettext (domainname, msgid, LC_MESSAGES)
#endif
/* Fill buf with a string describing the errno code in ERRNUM. */
int
@ -41,13 +31,18 @@ __xpg_strerror_r (int errnum, char *buf, size_t buflen)
const char *estr = __strerror_r (errnum, buf, buflen);
size_t estrlen = strlen (estr);
if (errnum < 0 || errnum >= _sys_nerr_internal
|| _sys_errlist_internal[errnum] == NULL)
return EINVAL;
if (estr == buf)
{
assert (errnum < 0 || errnum >= _sys_nerr_internal
|| _sys_errlist_internal[errnum] == NULL);
return EINVAL;
}
assert (errnum >= 0 && errnum < _sys_nerr_internal
&& _sys_errlist_internal[errnum] != NULL);
assert (estr != buf);
/* Terminate the string in any case. */
*((char *) __mempcpy (buf, estr, MIN (buflen - 1, estrlen))) = '\0';
/* Terminate the string in any case. */
if (buflen > 0)
*((char *) __mempcpy (buf, estr, MIN (buflen - 1, estrlen))) = '\0';
return buflen <= estrlen ? ERANGE : 0;
}