add strtod() underflow test

3 files changed, 29 insertions, 2 deletions

diff --git a/regress/lib/libc/Makefile b/regress/lib/libc/Makefile
index a6d3d766b1c..04970c7e163 100644
--- a/regress/lib/libc/Makefile
+++ b/regress/lib/libc/Makefile
@@ -1,9 +1,9 @@
-#	$OpenBSD: Makefile,v 1.23 2006/03/25 20:28:19 otto Exp $
+#	$OpenBSD: Makefile,v 1.24 2006/09/29 11:00:24 otto Exp $
 
 SUBDIR+= _setjmp alloca atexit db getaddrinfo getcap getopt_long hsearch longjmp
 SUBDIR+= locale malloc
 SUBDIR+= netdb popen regex setjmp setjmp-signal sigreturn sigsetjmp
-SUBDIR+= sprintf strerror strtonum telldir time vis
+SUBDIR+= sprintf strerror strtod strtonum telldir time vis
 
 .if (${MACHINE_ARCH} != "vax")
 SUBDIR+= ieeefp
diff --git a/regress/lib/libc/strtod/Makefile b/regress/lib/libc/strtod/Makefile
new file mode 100644
index 00000000000..030c0e7f56c
--- /dev/null
+++ b/regress/lib/libc/strtod/Makefile
@@ -0,0 +1,5 @@
+#	$OpenBSD: Makefile,v 1.1 2006/09/29 11:00:24 otto Exp $
+
+PROG=	strtodtest
+
+.include <bsd.regress.mk>
diff --git a/regress/lib/libc/strtod/strtodtest.c b/regress/lib/libc/strtod/strtodtest.c
new file mode 100644
index 00000000000..0291365a757
--- /dev/null
+++ b/regress/lib/libc/strtod/strtodtest.c
@@ -0,0 +1,22 @@
+/*	$OpenBSD: strtodtest.c,v 1.1 2006/09/29 11:00:24 otto Exp $	*/
+/* Public domain, Otto Moerbeek <otto@drijf.net>, 2006. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+/*
+ * Checks if strtod() reports underflow.
+ */
+
+int
+main()
+{
+	char *tmp="0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002";
+	double d;
+
+	d = strtod(tmp, NULL);
+	if (errno != ERANGE)
+		errx(1, "errno = %d", errno);
+	return (0);
+}