--- /dev/null
+++ Libc/Libc-1725.40.4/tests/netbsd_printf.c
@@ -0,0 +1,112 @@
+/* $NetBSD: t_printf.c,v 1.8 2012/04/11 16:21:42 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <time.h>
+#include <stdlib.h>
+
+#include "darwintest.h"
+
+T_DECL(netbsd_snprintf_c99, "Test printf(3) C99 conformance (PR lib/22019)")
+{
+	char s[4];
+
+	(void)memset(s, '\0', sizeof(s));
+	(void)snprintf(s, sizeof(s), "%#.o", 0);
+	(void)printf("printf = %#.o\n", 0);
+	(void)fprintf(stderr, "snprintf = %s", s);
+
+	T_ASSERT_EQ(strlen(s), (size_t)1, NULL);
+	T_ASSERT_EQ(s[0], '0', NULL);
+}
+
+T_DECL(netbsd_snprintf_dotzero, "PR lib/32951: %%.0f formats (0.0,0.5] to \"0.\"")
+{
+	char s[4];
+
+	T_WITH_ERRNO; T_EXPECT_EQ(snprintf(s, sizeof(s), "%.0f", 0.1), 1, NULL);
+	T_EXPECT_EQ_STR(s, "0", NULL);
+}
+
+T_DECL(netbsd_snprintf_float, "test that floating conversions don't leak memory")
+{
+	union {
+		double d;
+		uint64_t bits;
+	} u;
+	uint32_t ul, uh;
+	time_t now;
+	char buf[1000];
+
+#if 0
+	// rlimit isn't a good way to test for memory growth on our platform.
+	// Even a relatively simple program will use an unpredictable and
+	// large amount of memory just to reach main().
+	// To test for proper leaks, we rely on libdarwintest's built-in
+	// leaks support. To test for non-leaking growth, well... we don't
+	// have a great way to do that at present.
+
+	struct rlimit rl;
+
+	rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
+	T_WITH_ERRNO; T_EXPECT_NE(setrlimit(RLIMIT_AS, &rl), -1, NULL);
+	rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
+	T_EXPECT_POSIX_SUCCESS(setrlimit(RLIMIT_DATA, &rl), NULL);
+#endif
+
+	time(&now);
+	srand((unsigned int)now);
+	for (size_t i = 0; i < 10000; i++) {
+		ul = (uint32_t)rand();
+		uh = (uint32_t)rand();
+		u.bits = (uint64_t)uh << 32 | ul;
+		T_EXPECT_POSIX_SUCCESS(snprintf(buf, sizeof buf, " %.2f", u.d), NULL);
+	}
+}
+
+T_DECL(netbsd_sprintf_zeropad, "Test output format zero padding (PR lib/44113)")
+{
+	char str[1024];
+
+	T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", 0.0), 10, NULL);
+	T_EXPECT_EQ_STR(str, "000.000000", NULL);
+
+	/* ieeefp */
+#ifndef __vax__
+	/* printf(3) should ignore zero padding for nan/inf */
+	T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", NAN), 10, NULL);
+	T_EXPECT_EQ_STR(str, "       nan", NULL);
+	T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", INFINITY), 10, NULL);
+	T_EXPECT_EQ_STR(str, "       inf", NULL);
+#endif
+}