1 files changed, 12 insertions, 0 deletions
diff --git a/libc/test/src/string/strlen_test.cpp b/libc/test/src/string/strlen_test.cpp
index 4eb9d47..784dd7b 100644
--- a/libc/test/src/string/strlen_test.cpp
+++ b/libc/test/src/string/strlen_test.cpp
@@ -22,3 +22,15 @@ TEST(LlvmLibcStrLenTest, AnyString) {
   size_t result = LIBC_NAMESPACE::strlen(any);
   ASSERT_EQ((size_t)12, result);
 }
+
+TEST(LlvmLibcStrLenTest, DataAfterNulString) {
+  constexpr char A[10] = {'a', 'b', 'c', 'd', 'e', 'f', 0, 'h', 'i', 'j'};
+  size_t result = LIBC_NAMESPACE::strlen(A);
+  ASSERT_EQ((size_t)6, result);
+}
+
+TEST(LlvmLibcStrLenTest, MultipleNulsInOneWord) {
+  constexpr char A[10] = {'a', 'b', 0, 'd', 'e', 'f', 0, 'h', 'i', 'j'};
+  size_t result = LIBC_NAMESPACE::strlen(A);
+  ASSERT_EQ((size_t)2, result);
+}