3 files changed, 15 insertions, 1 deletions
diff --git a/tests/ajcTests.xml b/tests/ajcTests.xml
index b7a030283..a853bef28 100644
--- a/tests/ajcTests.xml
+++ b/tests/ajcTests.xml
@@ -7111,5 +7111,12 @@
 	        <compile files="AbstractBaseAndInterTypeInterface.java">
 	        </compile>
 	</ajc-test>
-    
+
+  <ajc-test dir="bugs/caseSensitivity" pr="42515"
+      title="NPE When compiling intertype declaration">
+        <compile files="uniqueId/Numbered.java,uniqueId/Bug.aj">
+		  <message kind="error" line="4"/>
+        </compile>
+  </ajc-test>   
+        
 </suite>
diff --git a/tests/bugs/caseSensitivity/uniqueId/Bug.aj b/tests/bugs/caseSensitivity/uniqueId/Bug.aj
new file mode 100644
index 000000000..cefd0924a
--- /dev/null
+++ b/tests/bugs/caseSensitivity/uniqueId/Bug.aj
@@ -0,0 +1,5 @@
+package uniqueid;
+
+public aspect Bug {
+  private long Numbered.objId;	
+}
+\ No newline at end of file
diff --git a/tests/bugs/caseSensitivity/uniqueId/Numbered.java b/tests/bugs/caseSensitivity/uniqueId/Numbered.java
new file mode 100644
index 000000000..29287dfa2
--- /dev/null
+++ b/tests/bugs/caseSensitivity/uniqueId/Numbered.java
@@ -0,0 +1,2 @@
+package uniqueId;
+public interface Numbered {}
+\ No newline at end of file