From 154469f475642a0962e6dd66dfc88ac61a55f443 Mon Sep 17 00:00:00 2001
From: belliash <belliash@codingworkshop.eu.org>
Date: Fri, 22 Mar 2019 18:33:39 +0100
Subject: [PATCH] Variable cannot be typecasted to NULL.

---
 engine/vm.c      | 16 ----------------
 include/ph7int.h |  1 -
 2 files changed, 17 deletions(-)

diff --git a/engine/vm.c b/engine/vm.c
index d46c6a1..8c72b89 100644
--- a/engine/vm.c
+++ b/engine/vm.c
@@ -2234,19 +2234,6 @@ static sxi32 VmByteCodeExec(
 				/* Invalidate any prior representation */
 				MemObjSetType(pTos, MEMOBJ_CHAR);
 				break;
-			/*
-			 * CVT_NULL: * * *
-			 *
-			 * Nullify the top of the stack.
-			 */
-			case PH7_OP_CVT_NULL:
-#ifdef UNTRUST
-				if(pTos < pStack) {
-					goto Abort;
-				}
-#endif
-				PH7_MemObjRelease(pTos);
-				break;
 			/*
 			 * CVT_NUMC: * * *
 			 *
@@ -5645,9 +5632,6 @@ static const char *VmInstrToString(sxi32 nOp) {
 		case PH7_OP_CVT_BOOL:
 			zOp = "CVT_BOOL";
 			break;
-		case PH7_OP_CVT_NULL:
-			zOp = "CVT_NULL";
-			break;
 		case PH7_OP_CVT_OBJ:
 			zOp = "CVT_OBJ";
 			break;
diff --git a/include/ph7int.h b/include/ph7int.h
index 502c597..3450feb 100644
--- a/include/ph7int.h
+++ b/include/ph7int.h
@@ -1455,7 +1455,6 @@ enum ph7_vm_op {
 	PH7_OP_LOAD_REF,     /* Load reference */
 	PH7_OP_STORE_REF,    /* Store a reference to a variable*/
 	PH7_OP_MEMBER,       /* Class member run-time access */
-	PH7_OP_CVT_NULL,     /* NULL cast */
 	PH7_OP_CVT_OBJ,      /* Object cast */
 	PH7_OP_CVT_CALL,     /* Callback cast */
 	PH7_OP_CVT_RES,      /* Resource cast */