Fix JASSIST-220

Static methods on interfaces in Java 8 means
that the INVOKESTATIC opcode can sometimes refer
to an item that is an InterfaceMethodrefInfo
(instead of a MethodrefInfo).

This is now handled in the
ConstPool.getMethodref...() methods by casting
to MemberrefInfo instead (since MemberrefInfo
contains all the needed information).

1 files changed, 16 insertions, 0 deletions

diff --git a/src/test/javassist/JvstTest4.java b/src/test/javassist/JvstTest4.java
index f8994cd7..6ea33308 100644
--- a/src/test/javassist/JvstTest4.java
+++ b/src/test/javassist/JvstTest4.java
@@ -980,4 +980,20 @@ public class JvstTest4 extends JvstTestRoot {
         assertEquals("i", cp.getUtf8Info(attr.name(0)));
         assertEquals("s", cp.getUtf8Info(attr.name(1)));
     }
+
+    // JIRA JASSIST-220
+    public void testStaticInterfaceMethods() throws Exception {
+        CtClass cc = sloader.get("test4.JIRA220");
+
+        cc.getMethod("foo", "()V").instrument(new ExprEditor() {
+            @Override
+            public void edit(MethodCall m) throws CannotCompileException {
+                try {
+                    m.getClassName();
+                } catch (Exception e) {
+                    fail(e.getMessage());
+                }
+            }
+        });
+    }
 }