1 files changed, 11 insertions, 0 deletions
diff --git a/libc/test/src/string/strncmp_test.cpp b/libc/test/src/string/strncmp_test.cpp
index 8855e0f59db0..52add6b516e8 100644
--- a/libc/test/src/string/strncmp_test.cpp
+++ b/libc/test/src/string/strncmp_test.cpp
@@ -156,3 +156,14 @@ TEST(LlvmLibcStrNCmpTest, StringComparisonEndsOnNullByteEvenWithLongerLength) {
   result = __llvm_libc::strncmp(s2, s1, 7);
   ASSERT_EQ(result, 0);
 }
+
+TEST(LlvmLibcStrNCmpTest, Case) {
+  const char *s1 = "aB";
+  const char *s2 = "ab";
+  int result = __llvm_libc::strncmp(s1, s2, 2);
+  ASSERT_LT(result, 0);
+
+  // Verify operands reversed.
+  result = __llvm_libc::strncmp(s2, s1, 2);
+  ASSERT_GT(result, 0);
+}