Module Name:    src
Committed By:   jruoho
Date:           Tue Apr  5 06:15:31 UTC 2011

Modified Files:
        src/distrib/sets/lists/tests: mi
        src/tests/lib/libc/gen: Makefile
        src/tests/lib/libc/stdlib: Makefile
Added Files:
        src/tests/lib/libc/gen: t_getgrent.c t_ttyname.c
        src/tests/lib/libc/stdlib: t_strtod.c

Log Message:
Add simple test cases for ttyname(3), strtod(3), and getgrent(3).


To generate a diff of this commit:
cvs rdiff -u -r1.291 -r1.292 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.16 -r1.17 src/tests/lib/libc/gen/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/lib/libc/gen/t_getgrent.c \
    src/tests/lib/libc/gen/t_ttyname.c
cvs rdiff -u -r1.9 -r1.10 src/tests/lib/libc/stdlib/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/lib/libc/stdlib/t_strtod.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/distrib/sets/lists/tests/mi
diff -u src/distrib/sets/lists/tests/mi:1.291 src/distrib/sets/lists/tests/mi:1.292
--- src/distrib/sets/lists/tests/mi:1.291	Mon Apr  4 19:08:42 2011
+++ src/distrib/sets/lists/tests/mi	Tue Apr  5 06:15:30 2011
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.291 2011/04/04 19:08:42 jruoho Exp $
+# $NetBSD: mi,v 1.292 2011/04/05 06:15:30 jruoho Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -336,6 +336,7 @@
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_basedirname.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_dir.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_fmtcheck.debug		tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libc/gen/t_getgrent.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_glob_star.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_humanize_number.debug	tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_ldexp.debug		tests-lib-debug		debug,atf
@@ -345,6 +346,7 @@
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_rbstress.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_syslog_pthread.debug	tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_siginfo.debug		tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libc/gen/t_ttyname.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/gen/t_vis.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/getaddrinfo			tests-obsolete		obsolete
 ./usr/libdata/debug/usr/tests/lib/libc/getaddrinfo/data			tests-obsolete		obsolete
@@ -407,6 +409,7 @@
 ./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_hsearch.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_mi_vector_hash.debug	tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_posix_memalign.debug	tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_strtod.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_strtox.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libc/string				tests-lib-debug
 ./usr/libdata/debug/usr/tests/lib/libc/string/t_memcpy.debug		tests-lib-debug		debug,atf
@@ -1714,6 +1717,7 @@
 ./usr/tests/lib/libc/gen/t_basedirname		tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_dir			tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_fmtcheck		tests-lib-tests		atf
+./usr/tests/lib/libc/gen/t_getgrent		tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_glob_star		tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_humanize_number	tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_ldexp		tests-lib-tests		atf
@@ -1723,6 +1727,7 @@
 ./usr/tests/lib/libc/gen/t_rbstress		tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_syslog_pthread	tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_siginfo		tests-lib-tests		atf
+./usr/tests/lib/libc/gen/t_ttyname		tests-lib-tests		atf
 ./usr/tests/lib/libc/gen/t_vis			tests-lib-tests		atf
 ./usr/tests/lib/libc/getaddrinfo		tests-obsolete		obsolete
 ./usr/tests/lib/libc/getaddrinfo/Atffile	tests-obsolete		obsolete
@@ -1860,6 +1865,7 @@
 ./usr/tests/lib/libc/stdlib/t_hsearch		tests-lib-tests		atf
 ./usr/tests/lib/libc/stdlib/t_mi_vector_hash	tests-lib-tests		atf
 ./usr/tests/lib/libc/stdlib/t_posix_memalign	tests-lib-tests		atf
+./usr/tests/lib/libc/stdlib/t_strtod		tests-lib-tests		atf
 ./usr/tests/lib/libc/stdlib/t_strtox		tests-lib-tests		atf
 ./usr/tests/lib/libc/string			tests-lib-tests
 ./usr/tests/lib/libc/string/Atffile		tests-lib-tests		atf

Index: src/tests/lib/libc/gen/Makefile
diff -u src/tests/lib/libc/gen/Makefile:1.16 src/tests/lib/libc/gen/Makefile:1.17
--- src/tests/lib/libc/gen/Makefile:1.16	Mon Apr  4 09:52:18 2011
+++ src/tests/lib/libc/gen/Makefile	Tue Apr  5 06:15:31 2011
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.16 2011/04/04 09:52:18 jruoho Exp $
+# $NetBSD: Makefile,v 1.17 2011/04/05 06:15:31 jruoho Exp $
 
 .include <bsd.own.mk>
 
@@ -7,6 +7,7 @@
 TESTS_C+=	t_basedirname
 TESTS_C+=	t_dir
 TESTS_C+=	t_fmtcheck
+TESTS_C+=	t_getgrent
 TESTS_C+=	t_glob_star
 TESTS_C+=	t_humanize_number
 TESTS_C+=	t_ldexp
@@ -16,6 +17,7 @@
 TESTS_C+=	t_rbstress
 TESTS_C+=	t_siginfo
 TESTS_C+=	t_syslog_pthread
+TESTS_C+=	t_ttyname
 TESTS_C+=	t_vis
 
 LDADD.t_ldexp+=		-lm

Index: src/tests/lib/libc/stdlib/Makefile
diff -u src/tests/lib/libc/stdlib/Makefile:1.9 src/tests/lib/libc/stdlib/Makefile:1.10
--- src/tests/lib/libc/stdlib/Makefile:1.9	Thu Jan 13 14:32:35 2011
+++ src/tests/lib/libc/stdlib/Makefile	Tue Apr  5 06:15:30 2011
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.9 2011/01/13 14:32:35 pgoyette Exp $
+# $NetBSD: Makefile,v 1.10 2011/04/05 06:15:30 jruoho Exp $
 
 .include <bsd.own.mk>
 
@@ -10,10 +10,11 @@
 TESTS_C+=	t_hsearch
 TESTS_C+=	t_mi_vector_hash
 TESTS_C+=	t_posix_memalign
+TESTS_C+=	t_strtod
 TESTS_C+=	t_strtox
 
 TESTS_SH+=	t_atexit
-TESTS_SH+=	t_getopt        
+TESTS_SH+=	t_getopt
 
 MKMAN=no
 

Added files:

Index: src/tests/lib/libc/gen/t_getgrent.c
diff -u /dev/null src/tests/lib/libc/gen/t_getgrent.c:1.1
--- /dev/null	Tue Apr  5 06:15:31 2011
+++ src/tests/lib/libc/gen/t_getgrent.c	Tue Apr  5 06:15:31 2011
@@ -0,0 +1,181 @@
+/*	$NetBSD: t_getgrent.c,v 1.1 2011/04/05 06:15:31 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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.
+ */
+
+/*
+ * Copyright (c) 2009, Stathis Kamperis
+ * 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDERS 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/cdefs.h>
+__RCSID("$NetBSD: t_getgrent.c,v 1.1 2011/04/05 06:15:31 jruoho Exp $");
+
+#include <sys/wait.h>
+
+#include <atf-c.h>
+#include <grp.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+ATF_TC(getgrent_loop);
+ATF_TC_HEAD(getgrent_loop, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sequential getgrent(2)");
+}
+
+ATF_TC_BODY(getgrent_loop, tc)
+{
+	struct group *gr;
+	size_t i, j;
+
+	/*
+	 * Loop over the group database. The first
+	 * call returns the first entry and subsequent
+	 * calls return the rest of the entries.
+	 */
+	i = j = 0;
+
+	while((gr = getgrent()) != NULL)
+		i++;
+
+	/*
+	 * Rewind the database to the beginning
+	 * and loop over again until the end.
+	 */
+	setgrent();
+
+        while((gr = getgrent()) != NULL)
+		j++;
+
+	if (i != j)
+		atf_tc_fail("sequantial getgrent(3) failed");
+
+	/*
+	 * Close the database and reopen it.
+	 * The getgrent(3) call should always
+	 * automatically rewind the database.
+	 */
+	endgrent();
+
+        j = 0;
+
+        while((gr = getgrent()) != NULL)
+                j++;
+
+	if (i != j)
+		atf_tc_fail("getgrent(3) did not rewind");
+}
+
+ATF_TC(getgrent_setgid);
+ATF_TC_HEAD(getgrent_setgid, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test consistency of the group db");
+	atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(getgrent_setgid, tc)
+{
+	struct group *gr, *gr1, *gr2;
+	int rv, sta;
+	pid_t pid;
+
+	/*
+	 * Verify that the database is consistent.
+	 *
+	 * Note that because of the static buffers
+	 * used by getgrent(3), fork(2) is required,
+	 * even without the setgid(2) check.
+	 */
+        while((gr = getgrent()) != NULL) {
+
+		pid = fork();
+		ATF_REQUIRE(pid >= 0);
+
+		if (pid == 0) {
+
+			gr1 = getgrgid(gr->gr_gid);
+
+			if (gr1 == NULL)
+				_exit(EXIT_FAILURE);
+
+			gr2 = getgrnam(gr->gr_name);
+
+			if (gr2 == NULL)
+				_exit(EXIT_FAILURE);
+
+			rv = setgid(gr->gr_gid);
+
+			if (rv != 0)
+				_exit(EXIT_FAILURE);
+
+			_exit(EXIT_SUCCESS);
+		}
+
+		(void)wait(&sta);
+
+		if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
+			goto fail;
+	}
+
+	return;
+
+fail:
+	atf_tc_fail("group database is inconsistent");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, getgrent_loop);
+	ATF_TP_ADD_TC(tp, getgrent_setgid);
+
+	return atf_no_error();
+}
Index: src/tests/lib/libc/gen/t_ttyname.c
diff -u /dev/null src/tests/lib/libc/gen/t_ttyname.c:1.1
--- /dev/null	Tue Apr  5 06:15:31 2011
+++ src/tests/lib/libc/gen/t_ttyname.c	Tue Apr  5 06:15:31 2011
@@ -0,0 +1,112 @@
+/*	$NetBSD: t_ttyname.c,v 1.1 2011/04/05 06:15:31 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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/cdefs.h>
+__RCSID("$NetBSD: t_ttyname.c,v 1.1 2011/04/05 06:15:31 jruoho Exp $");
+
+#include <atf-c.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+ATF_TC(ttyname_err);
+ATF_TC_HEAD(ttyname_err, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test errors in ttyname(3)");
+}
+
+ATF_TC_BODY(ttyname_err, tc)
+{
+	char buf[0];
+	int fd, rv;
+
+	fd = open("XXX", O_RDONLY);
+
+	if (fd < 0) {
+
+		errno = 0;
+
+		ATF_REQUIRE(isatty(fd) != -1);
+		ATF_REQUIRE(errno == EBADF);
+
+		errno = 0;
+
+		ATF_REQUIRE(ttyname(fd) == NULL);
+		ATF_REQUIRE(errno == EBADF);
+	}
+
+	fd = open("/etc/passwd", O_RDONLY);
+
+	if (fd >= 0) {
+
+		errno = 0;
+
+		ATF_REQUIRE(isatty(fd) != -1);
+		ATF_REQUIRE(errno == ENOTTY);
+
+		errno = 0;
+
+		ATF_REQUIRE(ttyname(fd) == NULL);
+		ATF_REQUIRE(errno == ENOTTY);
+	}
+
+	if (isatty(STDIN_FILENO) != 0) {
+
+		rv = ttyname_r(STDIN_FILENO, buf, sizeof(buf));
+		ATF_REQUIRE(rv == ERANGE);
+	}
+}
+
+ATF_TC(ttyname_stdin);
+ATF_TC_HEAD(ttyname_stdin, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test ttyname(3) with stdin(3)");
+}
+
+ATF_TC_BODY(ttyname_stdin, tc)
+{
+
+	ATF_REQUIRE(isatty(STDIN_FILENO) == 1);
+	ATF_REQUIRE(ttyname(STDIN_FILENO) != NULL);
+
+	ATF_REQUIRE(close(STDIN_FILENO) == 0);
+
+	ATF_REQUIRE(isatty(STDIN_FILENO) != 1);
+	ATF_REQUIRE(ttyname(STDIN_FILENO) == NULL);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, ttyname_err);
+	ATF_TP_ADD_TC(tp, ttyname_stdin);
+
+	return atf_no_error();
+}

Index: src/tests/lib/libc/stdlib/t_strtod.c
diff -u /dev/null src/tests/lib/libc/stdlib/t_strtod.c:1.1
--- /dev/null	Tue Apr  5 06:15:31 2011
+++ src/tests/lib/libc/stdlib/t_strtod.c	Tue Apr  5 06:15:30 2011
@@ -0,0 +1,104 @@
+/*	$NetBSD: t_strtod.c,v 1.1 2011/04/05 06:15:30 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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.
+ */
+
+/* Public domain, Otto Moerbeek <o...@drijf.net>, 2006. */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_strtod.c,v 1.1 2011/04/05 06:15:30 jruoho Exp $");
+
+#include <atf-c.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+ATF_TC(strtod_basic);
+ATF_TC_HEAD(strtod_basic, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "A basic test of strtod(3)");
+}
+
+ATF_TC_BODY(strtod_basic, tc)
+{
+	char buf[512];
+	size_t i, n;
+	double d;
+
+	n = 1024 * 1000;
+
+	for (i = 1; i < n; i = i + 1024) {
+
+		(void)snprintf(buf, sizeof(buf), "%zu.%zu", i, i + 1);
+
+		errno = 0;
+		d = strtod(buf, NULL);
+
+		ATF_REQUIRE(d > 0.0);
+		ATF_REQUIRE(errno == 0);
+	}
+}
+
+ATF_TC(strtod_underflow);
+ATF_TC_HEAD(strtod_underflow, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test underflow in strtod(3)");
+}
+
+ATF_TC_BODY(strtod_underflow, tc)
+{
+
+	const char *tmp =
+	    "0.0000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000000000000000000000000000000000000000000"
+	    "000000000000000002";
+
+	double d;
+
+	errno = 0;
+	d = strtod(tmp, NULL);
+
+	if (errno != ERANGE)
+		atf_tc_fail("strtod(3) did not detect underflow");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, strtod_basic);
+	ATF_TP_ADD_TC(tp, strtod_underflow);
+
+	return atf_no_error();
+}

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