Issue #2678: Fix NPE in ParameterNameCheck

2 files changed, 37 insertions, 0 deletions

diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/checks/naming/ParameterNameCheckTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/checks/naming/ParameterNameCheckTest.java
index 1c35fd32e..28b363d87 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/checks/naming/ParameterNameCheckTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/checks/naming/ParameterNameCheckTest.java
@@ -137,4 +137,14 @@ public class ParameterNameCheckTest
             };
         verify(checkConfig, getPath("InputOverrideAnnotation.java"), expected);
     }
+
+    @Test
+    public void testIsOverriddenNoNullPointerException()
+        throws Exception {
+        final DefaultConfiguration checkConfig = createCheckConfig(ParameterNameCheck.class);
+        checkConfig.addAttribute("format", "^[a-z][a-zA-Z0-9]*$");
+        checkConfig.addAttribute("ignoreOverridden", "true");
+        final String[] expected = ArrayUtils.EMPTY_STRING_ARRAY;
+        verify(checkConfig, getPath("InputOverrideAnnotationNoNPE.java"), expected);
+    }
 }
diff --git a/src/test/resources/com/puppycrawl/tools/checkstyle/checks/naming/InputOverrideAnnotationNoNPE.java b/src/test/resources/com/puppycrawl/tools/checkstyle/checks/naming/InputOverrideAnnotationNoNPE.java
new file mode 100644
index 000000000..8295a120e
--- /dev/null
+++ b/src/test/resources/com/puppycrawl/tools/checkstyle/checks/naming/InputOverrideAnnotationNoNPE.java
@@ -0,0 +1,27 @@
+package com.puppycrawl.tools.checkstyle.checks.naming;
+
+class InputOverrideAnnotationNoNPE
+{
+    // method with many parameters
+    void myMethod(int a, int b) {
+
+    }
+
+    // method with many parameters
+    void myMethod2(int a, int b) {
+
+    }
+}
+
+class Test extends InputOverrideAnnotationNoNPE
+{
+    @Override
+    void myMethod(int a, int b) {
+
+    }
+
+    @java.lang.Override
+    void myMethod2(int a, int b) {
+
+    }
+}