diff options
Diffstat (limited to 'lib/libc/stdio/snprintf.c')
| -rw-r--r-- | lib/libc/stdio/snprintf.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c index 74af42d..d0ae5a6 100644 --- a/lib/libc/stdio/snprintf.c +++ b/lib/libc/stdio/snprintf.c @@ -41,6 +41,7 @@ static char sccsid[] = "@(#)snprintf.c 8.1 (Berkeley) 6/4/93"; #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include <errno.h> #include <limits.h> #include <stdio.h> #include <stdarg.h> @@ -59,8 +60,11 @@ snprintf(char * __restrict str, size_t n, char const * __restrict fmt, ...) on = n; if (n != 0) n--; - if (n > INT_MAX) - n = INT_MAX; + if (n > INT_MAX) { + errno = EOVERFLOW; + *str = '\0'; + return (EOF); + } va_start(ap, fmt); f._flags = __SWR | __SSTR; f._bf._base = f._p = (unsigned char *)str; @@ -84,8 +88,11 @@ snprintf_l(char * __restrict str, size_t n, locale_t locale, on = n; if (n != 0) n--; - if (n > INT_MAX) - n = INT_MAX; + if (n > INT_MAX) { + errno = EOVERFLOW; + *str = '\0'; + return (EOF); + } va_start(ap, fmt); f._flags = __SWR | __SSTR; f._bf._base = f._p = (unsigned char *)str; |
