diff --git a/chore/_xtool/llcppsigfetch/parse/cvt.go b/chore/_xtool/llcppsigfetch/parse/cvt.go
index 5e5a84c0..00cbbac5 100644
--- a/chore/_xtool/llcppsigfetch/parse/cvt.go
+++ b/chore/_xtool/llcppsigfetch/parse/cvt.go
@@ -271,7 +271,9 @@ func (ct *Converter) ProcessBuiltinType(t clang.Type) *ast.BuiltinType {
 		kind = ast.Float128
 	default:
 		// like IBM128,NullPtr,Accum
-		fmt.Fprintln(os.Stderr, "todo: unknown builtin type:", c.GoString(t.Kind.String().CStr()))
+		kindStr := t.Kind.String()
+		defer kindStr.Dispose()
+		fmt.Fprintln(os.Stderr, "todo: unknown builtin type:", c.GoString(kindStr.CStr()))
 	}
 
 	if IsExplicitSigned(t) {
diff --git a/chore/_xtool/llcppsigfetch/parse/cvt_test/decl_test/llgo.expect b/chore/_xtool/llcppsigfetch/parse/cvt_test/decl_test/llgo.expect
index f39f47d7..266d5992 100644
--- a/chore/_xtool/llcppsigfetch/parse/cvt_test/decl_test/llgo.expect
+++ b/chore/_xtool/llcppsigfetch/parse/cvt_test/decl_test/llgo.expect
@@ -2,7 +2,7 @@
 Test Case 1:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -28,7 +28,7 @@ Test Case 1:
 Test Case 2:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -64,7 +64,7 @@ Test Case 2:
 Test Case 3:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -110,7 +110,7 @@ Test Case 3:
 Test Case 4:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -158,7 +158,7 @@ Test Case 4:
 Test Case 5:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -208,7 +208,7 @@ Test Case 5:
 Test Case 6:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -262,7 +262,7 @@ Test Case 6:
 Test Case 7:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
@@ -313,7 +313,7 @@ Test Case 7:
 Test Case 8:
 {
 	"temp.h":	{
-		"Path":	"temp.h",
+		"path":	"temp.h",
 		"decls":	[{
 				"Loc":	null,
 				"Doc":	null,
diff --git a/chore/_xtool/llcppsigfetch/parse/dump.go b/chore/_xtool/llcppsigfetch/parse/dump.go
index 5b0ce8ac..21616892 100644
--- a/chore/_xtool/llcppsigfetch/parse/dump.go
+++ b/chore/_xtool/llcppsigfetch/parse/dump.go
@@ -9,15 +9,13 @@ import (
 func (ct *Converter) GetFilesJSON() *cjson.JSON {
 	root := cjson.Object()
 	for _, file := range ct.files {
-		f := cjson.Object()
-		f.SetItem(c.Str("Path"), cjson.String(c.AllocaCStr(file.Path)))
-		ct.FileJSON(file, f)
-		root.SetItem(c.AllocaCStr(file.Path), f)
+		root.SetItem(c.AllocaCStr(file.Path), ct.FileJSON(file))
 	}
 	return root
 }
 
-func (ct *Converter) FileJSON(file *ast.File, root *cjson.JSON) {
+func (ct *Converter) FileJSON(file *ast.File) *cjson.JSON {
+	root := cjson.Object()
 	decls := cjson.Array()
 	includes := cjson.Array()
 	macros := cjson.Array()
@@ -26,9 +24,11 @@ func (ct *Converter) FileJSON(file *ast.File, root *cjson.JSON) {
 		decls.AddItem(ct.DeclJSON(decl))
 	}
 
+	root.SetItem(c.Str("path"), cjson.String(c.AllocaCStr(file.Path)))
 	root.SetItem(c.Str("decls"), decls)
 	root.SetItem(c.Str("includes"), includes)
 	root.SetItem(c.Str("macros"), macros)
+	return root
 }
 
 func (ct *Converter) DeclJSON(decl ast.Decl) *cjson.JSON {
@@ -106,7 +106,6 @@ func (ct *Converter) TypeJSON(t ast.Expr) *cjson.JSON {
 		}
 		list := cjson.Array()
 		for _, c := range d.List {
-			println(c.Text)
 			list.AddItem(ct.TypeJSON(c))
 		}
 		root.SetItem(c.Str("List"), list)