diff options
Diffstat (limited to 'lib/libc/stdio/snprintf.c')
| -rw-r--r-- | lib/libc/stdio/snprintf.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c index 0e3c456..086f8b2 100644 --- a/lib/libc/stdio/snprintf.c +++ b/lib/libc/stdio/snprintf.c @@ -39,7 +39,7 @@ static char sccsid[] = "@(#)snprintf.c 8.1 (Berkeley) 6/4/93"; #endif static const char rcsid[] = - "$Id$"; + "$Id: snprintf.c,v 1.5 1997/02/22 15:02:29 peter Exp $"; #endif /* LIBC_SCCS and not lint */ #include <stdio.h> @@ -65,8 +65,11 @@ snprintf(str, n, fmt, va_alist) va_list ap; FILE f; + if (n == 0) + return (0); if ((int)n < 1) return (EOF); + n--; #if __STDC__ va_start(ap, fmt); #else @@ -75,9 +78,11 @@ snprintf(str, n, fmt, va_alist) f._file = -1; f._flags = __SWR | __SSTR; f._bf._base = f._p = (unsigned char *)str; - f._bf._size = f._w = n - 1; + f._bf._size = f._w = n; ret = vfprintf(&f, fmt, ap); *f._p = 0; va_end(ap); - return (ret); + if (ret == EOF) + return (ret); + return (ret > (int)n ? n : ret); } |
