Libc-1044.1.2.tar.gz

[apple/libc.git] / stdio / FreeBSD / vsnprintf.c

diff --git a/stdio/FreeBSD/vsnprintf.c b/stdio/FreeBSD/vsnprintf.c
index 1a20c99dd77780b2b421f047ca857bc40da47c10..4b29144638c64efac87a04ef5602ed8e6b5931bc 100644 (file)
--- a/stdio/FreeBSD/vsnprintf.c
+++ b/stdio/FreeBSD/vsnprintf.c
@@ -36,24 +36,35 @@ static char sccsid[] = "@(#)vsnprintf.c     8.1 (Berkeley) 6/4/93";
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD: src/lib/libc/stdio/vsnprintf.c,v 1.24 2008/04/17 22:17:54 jhb Exp $");
 
+#include "xlocale_private.h"
+
 #include <limits.h>
 #include <stdio.h>
 #include "local.h"
 
-int
-vsnprintf(char * __restrict str, size_t n, const char * __restrict fmt,
-    __va_list ap)
+__private_extern__ int
+_vsnprintf(printf_comp_t __restrict pc, printf_domain_t __restrict domain, char * __restrict str, size_t n, locale_t __restrict loc, const char * __restrict fmt, __va_list ap)
 {
        size_t on;
        int ret;
        char dummy[2];
        FILE f;
+       struct __sFILEX ext;
+       f._extra = &ext;
+       INITEXTRA(&f);
 
        on = n;
        if (n != 0)
                n--;
+#if defined(__i386__)
+       /* <rdar://problem/16329527> don't corrupt the output buffer at all if the size underflowed */
+       if (n > INT_MAX)
+               on = n = 0;
+#else
        if (n > INT_MAX)
                n = INT_MAX;
+#endif
+
        /* Stdio internals do not deal correctly with zero length buffer */
        if (n == 0) {
                if (on > 0)
@@ -67,8 +78,21 @@ vsnprintf(char * __restrict str, size_t n, const char * __restrict fmt,
        f._bf._size = f._w = n;
        f._orientation = 0;
        memset(&f._mbstate, 0, sizeof(mbstate_t));
-       ret = __vfprintf(&f, fmt, ap);
+       ret = __v2printf(pc, domain, &f, loc, fmt, ap);
        if (on > 0)
                *f._p = '\0';
        return (ret);
 }
+int
+vsnprintf_l(char * __restrict str, size_t n, locale_t __restrict loc, const char * __restrict fmt,
+    __va_list ap)
+{
+       return _vsnprintf(XPRINTF_PLAIN, NULL, str, n, loc, fmt, ap);
+}
+
+int
+vsnprintf(char * __restrict str, size_t n, const char * __restrict fmt,
+    __va_list ap)
+{
+       return _vsnprintf(XPRINTF_PLAIN, NULL, str, n, __current_locale(), fmt, ap);
+}