diff --git a/internal/encoder/code.go b/internal/encoder/code.go
index 2ac8085..19797ef 100644
--- a/internal/encoder/code.go
+++ b/internal/encoder/code.go
@@ -483,16 +483,17 @@ func linkRecursiveCode2(ctx *compileContext) {
 		beforeLastCode := code.End
 		lastCode := beforeLastCode.Next
 
-		lastCode.Idx = beforeLastCode.Idx + uintptrSize
+		totalLength := code.TotalLength()
+		lastCode.Idx = uint32((totalLength + 1) * uintptrSize)
 		lastCode.ElemIdx = lastCode.Idx + uintptrSize
 		lastCode.Length = lastCode.Idx + 2*uintptrSize
 		code.End.Next.Op = OpRecursiveEnd
 
-		// extend length to alloc slot for elemIdx + length
-		totalLength := uintptr(recursive.TotalLength()) + 3
-		nextTotalLength := uintptr(codes.First().TotalLength()) + 3
 
-		compiled.CurLen = totalLength
+		// extend length to alloc slot for elemIdx + length
+		curTotalLength := uintptr(recursive.TotalLength()) + 3
+		nextTotalLength := uintptr(totalLength) + 3
+		compiled.CurLen = curTotalLength
 		compiled.NextLen = nextTotalLength
 		compiled.Linked = true
 	}
diff --git a/internal/encoder/opcode.go b/internal/encoder/opcode.go
index 5c87f69..eb78001 100644
--- a/internal/encoder/opcode.go
+++ b/internal/encoder/opcode.go
@@ -490,7 +490,7 @@ func (c *Opcode) dumpHead(code *Opcode) string {
 		length = code.Length / uintptrSize
 	}
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][elemIdx:%d][length:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -502,7 +502,7 @@ func (c *Opcode) dumpHead(code *Opcode) string {
 
 func (c *Opcode) dumpMapHead(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -515,7 +515,7 @@ func (c *Opcode) dumpMapHead(code *Opcode) string {
 
 func (c *Opcode) dumpMapEnd(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][mapPos:%d][length:%d])`,
+		`[%03d]%s%s ([idx:%d][mapPos:%d][length:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -533,7 +533,7 @@ func (c *Opcode) dumpElem(code *Opcode) string {
 		length = code.Length / uintptrSize
 	}
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][elemIdx:%d][length:%d][size:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][size:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -546,7 +546,7 @@ func (c *Opcode) dumpElem(code *Opcode) string {
 
 func (c *Opcode) dumpField(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][key:%s][offset:%d])`,
+		`[%03d]%s%s ([idx:%d][key:%s][offset:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -558,7 +558,7 @@ func (c *Opcode) dumpField(code *Opcode) string {
 
 func (c *Opcode) dumpKey(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -571,7 +571,7 @@ func (c *Opcode) dumpKey(code *Opcode) string {
 
 func (c *Opcode) dumpValue(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%02d]%s%s ([idx:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -610,7 +610,7 @@ func (c *Opcode) Dump() string {
 			code = code.Next
 		default:
 			codes = append(codes, fmt.Sprintf(
-				"[%02d]%s%s ([idx:%d])",
+				"[%03d]%s%s ([idx:%d])",
 				code.DisplayIdx,
 				strings.Repeat("-", int(code.Indent)),
 				code.Op,