Seeing something weird with invokestatic methods on non static methods?

src/main/java/info/sigterm/deob/ClassFile.java

@@ -175,6 +175,19 @@ public class ClassFile
 		return null;
 	}
 	
+	public Method findMethodDeepStatic(NameAndType nat)
+	{
+		Method m = methods.findMethod(nat);
+		if (m != null && m.isStatic())
+			return m;
+
+		ClassFile parent = getParent();
+		if (parent != null)
+			return parent.findMethodDeep(nat);
+
+		return null;
+	}
+	
 	public Method findMethod(NameAndType nat)
 	{
 		return methods.findMethod(nat);

src/main/java/info/sigterm/deob/attributes/code/instructions/InvokeStatic.java

@@ -51,7 +51,7 @@ public class InvokeStatic extends Instruction implements InvokeInstruction
 		if (otherClass == null)
 			return new ArrayList<>(); // not our class
 		
-		info.sigterm.deob.Method other = otherClass.findMethodDeep(method.getNameAndType());
+		info.sigterm.deob.Method other = otherClass.findMethodDeepStatic(method.getNameAndType());
 		assert other != null;
 		
 		List<info.sigterm.deob.Method> list = new ArrayList<>();
@@ -180,7 +180,8 @@ public class InvokeStatic extends Instruction implements InvokeInstruction
 		if (otherClass == null)
 			return; // not our class
 		
-		info.sigterm.deob.Method other = otherClass.findMethodDeep(method.getNameAndType());
+		info.sigterm.deob.Method other = otherClass.findMethodDeepStatic(method.getNameAndType());
+		assert other.isStatic();
 		
 		if (other.equals(m))
 			method = new Method(method.getClassEntry(), new NameAndType(name, method.getNameAndType().getDescriptor()));

src/main/java/info/sigterm/deob/deobfuscators/UnusedParameters.java

@@ -34,7 +34,7 @@ public class UnusedParameters implements Deobfuscator
 		
 		visited.add(cf);
 		
-		Method method = cf.findMethodDeep(nat); // XXX this searches down
+		Method method = cf.findMethod(nat);
 		if (method != null && !method.isStatic())
 			list.add(method);
 		
@@ -55,10 +55,7 @@ public class UnusedParameters implements Deobfuscator
 	private static List<Method> findDependentMethods(Method m)
 	{
 		ClassFile cf = m.getMethods().getClassFile();
-		List<Method> methods = findDependentMethods(m.getNameAndType(), new HashSet<ClassFile>(), cf.getGroup(), cf);
-		
-		Set s = new HashSet<>(methods); // XXX
-		return new ArrayList<>(s);
+		return findDependentMethods(m.getNameAndType(), new HashSet<ClassFile>(), cf.getGroup(), cf);
 	}
 	
 	private List<Integer> findUnusedParameters(Method method)