diff --git a/cmd/gogensig/convert/_testdata/receiver/conf/llcppg.symb.json b/cmd/gogensig/convert/_testdata/receiver/conf/llcppg.symb.json
index afd2c42..5fb5f44 100644
--- a/cmd/gogensig/convert/_testdata/receiver/conf/llcppg.symb.json
+++ b/cmd/gogensig/convert/_testdata/receiver/conf/llcppg.symb.json
@@ -1,4 +1,9 @@
 [
+  {
+    "mangle": "ares_dns_pton",
+    "c++": "ares_dns_pton(const char *, struct ares_addr *, int *)",
+    "go": "AresDnsPton"
+  },
   {
     "mangle": "ares_dns_addr_to_ptr",
     "c++": "ares_dns_addr_to_ptr(const struct ares_addr *)",
diff --git a/cmd/gogensig/convert/_testdata/receiver/gogensig.expect b/cmd/gogensig/convert/_testdata/receiver/gogensig.expect
index 58333ea..e10ad2a 100644
--- a/cmd/gogensig/convert/_testdata/receiver/gogensig.expect
+++ b/cmd/gogensig/convert/_testdata/receiver/gogensig.expect
@@ -6,11 +6,8 @@ import (
 	_ "unsafe"
 )
 
-type X__Uint32T c.Uint
-type InAddrT X__Uint32T
-
-type InAddr struct {
-	SAddr InAddrT
+type InAddr1 struct {
+	SAddr c.Uint
 }
 
 type AresIn6Addr struct {
@@ -22,7 +19,7 @@ type AresIn6Addr struct {
 ===== use.go =====
 package receiver
 
-import _ "unsafe"
+import "unsafe"
 
 type AresAddr struct {
 	Family c.Int
@@ -30,14 +27,14 @@ type AresAddr struct {
 		Addr6 AresIn6Addr
 	}
 }
+//go:linkname AresDnsPton C.ares_dns_pton
+func AresDnsPton(ipaddr *int8, addr *AresAddr) unsafe.Pointer
 // llgo:link (*aresAddr).AresDnsAddrToPtr C.ares_dns_addr_to_ptr
 func (p *AresAddr) AresDnsAddrToPtr() *int8 {
 	return nil
 }
 
 ===== llcppg.pub =====
-__uint32_t X__Uint32T
 ares_addr AresAddr
 ares_in6_addr AresIn6Addr
-in_addr InAddr
-in_addr_t InAddrT
\ No newline at end of file
+in_addr1 InAddr1
\ No newline at end of file
diff --git a/cmd/gogensig/convert/_testdata/receiver/hfile/temp.h b/cmd/gogensig/convert/_testdata/receiver/hfile/temp.h
index d265b65..46c6245 100644
--- a/cmd/gogensig/convert/_testdata/receiver/hfile/temp.h
+++ b/cmd/gogensig/convert/_testdata/receiver/hfile/temp.h
@@ -1,7 +1,5 @@
-typedef unsigned int __uint32_t;
-typedef __uint32_t in_addr_t;
-struct in_addr {
-    in_addr_t s_addr;
+struct in_addr1 {
+    unsigned int s_addr;
 };
 
 struct ares_in6_addr {
@@ -14,9 +12,9 @@ struct ares_addr {
     int family;
 
     union {
-        struct in_addr addr4;
+        struct in_addr1 addr4;
         struct ares_in6_addr addr6;
     } addr;
 };
 
-#include "use.h"
+#include "use.h"
\ No newline at end of file
diff --git a/cmd/gogensig/convert/_testdata/receiver/hfile/use.h b/cmd/gogensig/convert/_testdata/receiver/hfile/use.h
index 6fb852a..3042c95 100644
--- a/cmd/gogensig/convert/_testdata/receiver/hfile/use.h
+++ b/cmd/gogensig/convert/_testdata/receiver/hfile/use.h
@@ -1,2 +1,3 @@
-
-char *ares_dns_addr_to_ptr(const struct ares_addr *addr);
+// todo(zzy): ares_addr need generate in the temp.go
+const void *ares_dns_pton(const char *ipaddr, struct ares_addr *addr);
+char *ares_dns_addr_to_ptr(const struct ares_addr *addr);
\ No newline at end of file
diff --git a/cmd/gogensig/convert/package.go b/cmd/gogensig/convert/package.go
index 67271d9..e784d84 100644
--- a/cmd/gogensig/convert/package.go
+++ b/cmd/gogensig/convert/package.go
@@ -297,6 +297,9 @@ func (p *Package) handleCompleteType(decl *gogen.TypeDecl, typ *ast.RecordType,
 // For such declarations, create a empty type decl and store it in the
 // incomplete map, but not in the public symbol table.
 func (p *Package) handleImplicitForwardDecl(name string) *gogen.TypeDecl {
+	if decl, ok := p.incomplete[name]; ok {
+		return decl
+	}
 	pubName := p.nameMapper.GetGoName(name, p.trimPrefixes())
 	decl := p.emptyTypeDecl(pubName, nil)
 	p.incomplete[name] = decl