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Use an internal buffer for the result when the first argument is NULL.

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This commit is contained in:
Tim J. Robbins 2002-10-25 13:24:45 +00:00
parent ddc4f28155
commit 583efa1268
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=105932
1 changed files with 4 additions and 0 deletions
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4
lib/libc/locale/wcrtomb.c
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@ -28,6 +28,7 @@
__FBSDID("$FreeBSD$");
#include <errno.h>
#include <limits.h>
#include <rune.h>
#include <stdlib.h>
#include <wchar.h>
@ -36,7 +37,10 @@ size_t
wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps __unused)
{
char *e;
char buf[MB_LEN_MAX];
if (s == NULL)
s = buf;
sputrune(wc, s, MB_CUR_MAX, &e);
if (e == NULL) {
errno = EILSEQ;