diff --git a/test.cpp b/test.cpp
index 05f1668..2c835be 100644
--- a/test.cpp
+++ b/test.cpp
@@ -2844,6 +2844,16 @@ static void fuzz_crash()
     }
 }
 
+static void leak()
+{
+    const char code[] = "#include</\\\\>\n"
+                        "#include</\\\\>\n";
+    simplecpp::OutputList outputList;
+    ASSERT_EQUALS("", preprocess(code, &outputList));
+    ASSERT_EQUALS("file0,1,missing_header,Header not found: </\\\\>\n"
+                  "file0,2,missing_header,Header not found: </\\\\>\n", toString(outputList));
+}
+
 int main(int argc, char **argv)
 {
     TEST_CASE(backslash);
@@ -3081,5 +3091,7 @@ int main(int argc, char **argv)
 
     TEST_CASE(fuzz_crash);
 
+    TEST_CASE(leak);
+
     return numberOfFailedAssertions > 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }