diff options
Diffstat (limited to 'lib/libc/stdio/vswprintf.c')
| -rw-r--r-- | lib/libc/stdio/vswprintf.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/libc/stdio/vswprintf.c b/lib/libc/stdio/vswprintf.c index 4b1e382..2585888 100644 --- a/lib/libc/stdio/vswprintf.c +++ b/lib/libc/stdio/vswprintf.c @@ -39,6 +39,7 @@ __FBSDID("FreeBSD: src/lib/libc/stdio/vasprintf.c,v 1.16 2002/08/21 16:19:57 mik __FBSDID("$FreeBSD$"); #include <errno.h> +#include <limits.h> #include <stdio.h> #include <stdlib.h> #include <wchar.h> @@ -61,6 +62,11 @@ vswprintf_l(wchar_t * __restrict s, size_t n, locale_t locale, errno = EINVAL; return (-1); } + if (n - 1 > INT_MAX) { + errno = EOVERFLOW; + *s = L'\0'; + return (-1); + } f._flags = __SWR | __SSTR | __SALC; f._bf._base = f._p = (unsigned char *)malloc(128); |
