Fixed a bug causing a StackOverflowException on packet construction.

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/CompiledStructureModifier.java

@@ -67,6 +67,16 @@ public abstract class CompiledStructureModifier<TField> extends StructureModifie
 		else
 			return (TField) result;
 	}
+
+	/**
+	 * Read the given field index using reflection.
+	 * @param index - index of field.
+	 * @return Resulting value.
+	 * @throws FieldAccessException The field doesn't exist, or it cannot be accessed under the current security contraints.
+	 */
+	protected Object readReflected(int index) throws FieldAccessException {
+		return super.read(index);
+	}
 	
 	protected abstract Object readGenerated(int fieldIndex) throws FieldAccessException;
 
@@ -78,6 +88,17 @@ public abstract class CompiledStructureModifier<TField> extends StructureModifie
 		return writeGenerated(index, value);
 	}
 	
+	/**
+	 * Write the given field using reflection.
+	 * @param index - index of field.
+	 * @param value - new value.
+	 * @throws FieldAccessException The field doesn't exist, or it cannot be accessed under the current security contraints.
+	 */ 
+	@SuppressWarnings("unchecked")
+	protected void writeReflected(int index, Object value) throws FieldAccessException {
+		super.write(index, (TField) value);
+	}
+	
 	protected abstract StructureModifier<TField> writeGenerated(int index, Object value) throws FieldAccessException;
 	
 	@Override

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/StructureCompiler.java

@@ -335,8 +335,7 @@ public final class StructureCompiler {
 				mv.visitVarInsn(Opcodes.ALOAD, 0);
 				mv.visitVarInsn(Opcodes.ILOAD, 1);
 				mv.visitVarInsn(Opcodes.ALOAD, 2);
-				mv.visitMethodInsn(Opcodes.INVOKESPECIAL, COMPILED_CLASS, "write", "(ILjava/lang/Object;)L" + SUPER_CLASS + ";");
+				mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, COMPILED_CLASS, "writeReflected", "(ILjava/lang/Object;)V;");
-				mv.visitInsn(Opcodes.POP);
 			}
 		
 			mv.visitJumpInsn(Opcodes.GOTO, returnLabel);
@@ -408,7 +407,7 @@ public final class StructureCompiler {
 				// We have to use reflection for private and protected fields.
 				mv.visitVarInsn(Opcodes.ALOAD, 0);
 				mv.visitVarInsn(Opcodes.ILOAD, 1);
-				mv.visitMethodInsn(Opcodes.INVOKESPECIAL, COMPILED_CLASS, "read", "(I)Ljava/lang/Object;");
+				mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, COMPILED_CLASS, "readReflected", "(I)Ljava/lang/Object;");
 			}
 			
 			mv.visitInsn(Opcodes.ARETURN);