diff --git a/cl/_testrt/gblarray/out.ll b/cl/_testrt/gblarray/out.ll
index c03b7420..ab730de7 100644
--- a/cl/_testrt/gblarray/out.ll
+++ b/cl/_testrt/gblarray/out.ll
@@ -1,7 +1,8 @@
 ; ModuleID = 'main'
 source_filename = "main"
 
-%"github.com/goplus/llgo/internal/abi.Type" = type { i64, i64, i32, i8, i8, i8, i8, ptr, ptr, i32, i32 }
+%"github.com/goplus/llgo/internal/abi.Type" = type { i64, i64, i32, i8, i8, i8, i8, %"github.com/goplus/llgo/internal/runtime.Closure", ptr, i32, i32 }
+%"github.com/goplus/llgo/internal/runtime.Closure" = type { ptr, ptr }
 
 @main.basicTypes = global ptr null
 @"main.init$guard" = global ptr null
diff --git a/ssa/type_c.go b/ssa/type_c.go
index e4d982f5..ff217cb3 100644
--- a/ssa/type_c.go
+++ b/ssa/type_c.go
@@ -16,7 +16,9 @@
 
 package ssa
 
-import "go/types"
+import (
+	"go/types"
+)
 
 // -----------------------------------------------------------------------------
 
@@ -72,6 +74,10 @@ func cvtCType(typ types.Type) (types.Type, bool) {
 		}
 	case *types.Struct:
 		return cvtCStruct(t)
+	case *types.Named:
+		if _, cvt := cvtCType(t.Underlying()); cvt {
+			panic("todo: named type")
+		}
 	case *types.Signature:
 		t = CFuncDecl(t)
 		return (*CFuncPtr)(t), true