diff --git a/cl/compile_spx_test.go b/cl/compile_spx_test.go
index 9786376e7..1fe31d875 100644
--- a/cl/compile_spx_test.go
+++ b/cl/compile_spx_test.go
@@ -108,6 +108,7 @@ func gopSpxErrorTestEx(t *testing.T, msg, gmx, spxcode, gmxfile, spxfile string)
 		t.Fatal("ParseFSDir:", err)
 	}
 	conf := *gblConf
+	conf.Recorder = nil
 	conf.NoFileLine = false
 	conf.WorkingDir = "/foo"
 	conf.TargetDir = "/foo"
diff --git a/cl/compile_test.go b/cl/compile_test.go
index e870aed3d..37cf5786b 100644
--- a/cl/compile_test.go
+++ b/cl/compile_test.go
@@ -50,6 +50,7 @@ func init() {
 	gblConf = &cl.Config{
 		Fset:          gblFset,
 		Importer:      imp,
+		Recorder:      gopRecorder{},
 		LookupClass:   lookupClass,
 		LookupPub:     lookupPub,
 		C2goBase:      "github.com/goplus/gop/cl/internal",
diff --git a/cl/recorder_test.go b/cl/recorder_test.go
new file mode 100644
index 000000000..1e85a573b
--- /dev/null
+++ b/cl/recorder_test.go
@@ -0,0 +1,107 @@
+package cl_test
+
+import (
+	"go/types"
+
+	"github.com/goplus/gop/ast"
+)
+
+type gopRecorder struct {
+}
+
+// Type maps expressions to their types, and for constant
+// expressions, also their values. Invalid expressions are
+// omitted.
+//
+// For (possibly parenthesized) identifiers denoting built-in
+// functions, the recorded signatures are call-site specific:
+// if the call result is not a constant, the recorded type is
+// an argument-specific signature. Otherwise, the recorded type
+// is invalid.
+//
+// The Types map does not record the type of every identifier,
+// only those that appear where an arbitrary expression is
+// permitted. For instance, the identifier f in a selector
+// expression x.f is found only in the Selections map, the
+// identifier z in a variable declaration 'var z int' is found
+// only in the Defs map, and identifiers denoting packages in
+// qualified identifiers are collected in the Uses map.
+func (info gopRecorder) Type(e ast.Expr, tv types.TypeAndValue) {
+}
+
+// Instantiate maps identifiers denoting generic types or functions to their
+// type arguments and instantiated type.
+//
+// For example, Instantiate will map the identifier for 'T' in the type
+// instantiation T[int, string] to the type arguments [int, string] and
+// resulting instantiated *Named type. Given a generic function
+// func F[A any](A), Instances will map the identifier for 'F' in the call
+// expression F(int(1)) to the inferred type arguments [int], and resulting
+// instantiated *Signature.
+//
+// Invariant: Instantiating Uses[id].Type() with Instances[id].TypeArgs
+// results in an equivalent of Instances[id].Type.
+func (info gopRecorder) Instantiate(id *ast.Ident, inst types.Instance) {
+}
+
+// Def maps identifiers to the objects they define (including
+// package names, dots "." of dot-imports, and blank "_" identifiers).
+// For identifiers that do not denote objects (e.g., the package name
+// in package clauses, or symbolic variables t in t := x.(type) of
+// type switch headers), the corresponding objects are nil.
+//
+// For an embedded field, Def maps the field *Var it defines.
+//
+// Invariant: Defs[id] == nil || Defs[id].Pos() == id.Pos()
+func (info gopRecorder) Def(id *ast.Ident, obj types.Object) {
+}
+
+// Use maps identifiers to the objects they denote.
+//
+// For an embedded field, Use maps the *TypeName it denotes.
+//
+// Invariant: Uses[id].Pos() != id.Pos()
+func (info gopRecorder) Use(id *ast.Ident, obj types.Object) {
+}
+
+// Implicit maps nodes to their implicitly declared objects, if any.
+// The following node and object types may appear:
+//
+//	node               declared object
+//
+//	*ast.ImportSpec    *PkgName for imports without renames
+//	*ast.CaseClause    type-specific *Var for each type switch case clause (incl. default)
+//	*ast.Field         anonymous parameter *Var (incl. unnamed results)
+func (info gopRecorder) Implicit(node ast.Node, obj types.Object) {
+}
+
+// Select maps selector expressions (excluding qualified identifiers)
+// to their corresponding selections.
+func (info gopRecorder) Select(e *ast.SelectorExpr, sel *types.Selection) {
+}
+
+// Scope maps ast.Nodes to the scopes they define. Package scopes are not
+// associated with a specific node but with all files belonging to a package.
+// Thus, the package scope can be found in the type-checked Package object.
+// Scopes nest, with the Universe scope being the outermost scope, enclosing
+// the package scope, which contains (one or more) files scopes, which enclose
+// function scopes which in turn enclose statement and function literal scopes.
+// Note that even though package-level functions are declared in the package
+// scope, the function scopes are embedded in the file scope of the file
+// containing the function declaration.
+//
+// The following node types may appear in Scopes:
+//
+//	*ast.File
+//	*ast.FuncType
+//	*ast.TypeSpec
+//	*ast.BlockStmt
+//	*ast.IfStmt
+//	*ast.SwitchStmt
+//	*ast.TypeSwitchStmt
+//	*ast.CaseClause
+//	*ast.CommClause
+//	*ast.ForStmt
+//	*ast.RangeStmt
+func (info gopRecorder) Scope(n ast.Node, scope *types.Scope) {
+}