diff --git a/test.cpp b/test.cpp
index 42552a39..75e73ee6 100644
--- a/test.cpp
+++ b/test.cpp
@@ -2752,6 +2752,16 @@ static void token()
     ASSERT_TOKEN("+22", false, true, false);
 }
 
+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);
@@ -2984,5 +2994,7 @@ int main(int argc, char **argv)
 
     TEST_CASE(token);
 
+    TEST_CASE(leak);
+
     return numberOfFailedAssertions > 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }