diff --git a/lib/libc/tests/string/Makefile b/lib/libc/tests/string/Makefile
--- a/lib/libc/tests/string/Makefile
+++ b/lib/libc/tests/string/Makefile
@@ -12,6 +12,7 @@
 ATF_TESTS_C+=		memccpy_test
 ATF_TESTS_C+=		memcmp_test
 ATF_TESTS_C+=		memrchr_test
+ATF_TESTS_C+=		memset2_test
 ATF_TESTS_C+=		memset_s_test
 ATF_TESTS_C+=		strncmp_test
 ATF_TESTS_C+=		stpncpy_test
@@ -45,6 +46,7 @@
 NETBSD_ATF_TESTS_C+=	strrchr_test
 NETBSD_ATF_TESTS_C+=	swab_test
 
+SRCS.memset2_test=	memset_test.c
 SRCS.strcmp2_test=	strcmp_test.c
 SRCS.strerror2_test=	strerror_test.c
 
diff --git a/lib/libc/tests/string/memset_test.c b/lib/libc/tests/string/memset_test.c
new file mode 100644
--- /dev/null
+++ b/lib/libc/tests/string/memset_test.c
@@ -0,0 +1,29 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 Strahinja Stanisic <strajabot@FreeBSD.org>
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include <atf-c.h>
+
+ATF_TC_WITHOUT_HEAD(int_char_conv);
+ATF_TC_BODY(int_char_conv, tc)
+{
+	char b[64];
+	int c = 0xDEADBEEF;
+	memset(&b, c, 64);
+	for(int i=0; i<64; i++) {
+		assert(b[i] == (char)c);
+	}
+
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, int_char_conv);
+	return (atf_no_error());
+}
+