diff --git a/internal/encoder/assembler_regabi_amd64.go b/internal/encoder/assembler_regabi_amd64.go
index 4584c6d29..80f600a62 100644
--- a/internal/encoder/assembler_regabi_amd64.go
+++ b/internal/encoder/assembler_regabi_amd64.go
@@ -356,7 +356,19 @@ func (self *_Assembler) store_int(nd int, fn obj.Addr, ins string) {
     self.rbuf_di()                          // MOVQ   RP, DI
     self.Emit(ins, jit.Ptr(_SP_p, 0), _SI)  // $ins   (SP.p), SI
     self.call_c(fn)                         // CALL_C $fn
+    if fn == _F_i64toa {
+        self.check_int64(ins)
+    } else {
+        self.Emit("ADDQ", _AX, _RL)             // ADDQ   AX, RL
+    }
+}
+
+func (self *_Assembler) check_int64(ins string) {
+    self.Emit("LEAQ", jit.Sib(_RP, _RL, 1, 0), _BX) 
+    self.Emit("MOVQ", _AX, _CX)
     self.Emit("ADDQ", _AX, _RL)             // ADDQ   AX, RL
+    self.Emit(ins, jit.Ptr(_SP_p, 0), _AX)
+    self.call_go(_F_check_int64)
 }
 
 func (self *_Assembler) store_str(s string) {
diff --git a/internal/encoder/debug_go117.go b/internal/encoder/debug_go117.go
index 37e6f7d4f..39fabfa53 100644
--- a/internal/encoder/debug_go117.go
+++ b/internal/encoder/debug_go117.go
@@ -1,3 +1,4 @@
+//go:build go1.17 && !go1.23
 // +build go1.17,!go1.23
 
 /*
@@ -19,14 +20,15 @@
 package encoder
 
 import (
-    `fmt`
-    `os`
-    `runtime`
-    `strings`
-    `unsafe`
-
-    `github.com/bytedance/sonic/internal/jit`
-    `github.com/twitchyliquid64/golang-asm/obj`
+	"fmt"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"unsafe"
+
+	"github.com/bytedance/sonic/internal/jit"
+	"github.com/twitchyliquid64/golang-asm/obj"
 )
 
 const _FP_debug = 128
@@ -73,6 +75,19 @@ func print(i int){
     println(i)
 }
 
+var _F_check_int64 = jit.Func(checkInt64)
+
+func checkInt64(i int64, s string) {
+    // println("checkInt64", i, s)
+    a, err := strconv.ParseInt(s, 10, 64)
+    if err != nil {
+        panic(err)
+    }
+    if a != i {
+        panic(fmt.Sprintf("checkInt64: %d != %d", a, i))
+    }
+}
+
 func gc() {
     if !debugSyncGC {
         return