From fe007f9b160f9d685df14851d7d239461d6b6b29 Mon Sep 17 00:00:00 2001
From: spaceface <spaceface7777@gmail.com>
Date: Mon, 15 Feb 2021 16:35:31 +0100
Subject: [PATCH] gen: fix type_name for sumtype/interface pointers (#8769)

---
 vlib/v/gen/c/fn.v | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/vlib/v/gen/c/fn.v b/vlib/v/gen/c/fn.v
index 3d6737a104..2bd2435172 100644
--- a/vlib/v/gen/c/fn.v
+++ b/vlib/v/gen/c/fn.v
@@ -534,13 +534,15 @@ fn (mut g Gen) method_call(node ast.CallExpr) {
 	if left_sym.kind == .sum_type && node.name == 'type_name' {
 		g.write('tos3( /* $left_sym.name */ v_typeof_sumtype_${typ_sym.cname}( (')
 		g.expr(node.left)
-		g.write(').typ ))')
+		dot := if node.left_type.is_ptr() { '->' } else { '.' }
+		g.write(')${dot}typ ))')
 		return
 	}
 	if left_sym.kind == .interface_ && node.name == 'type_name' {
 		g.write('tos3( /* $left_sym.name */ v_typeof_interface_${typ_sym.cname}( (')
 		g.expr(node.left)
-		g.write(')._interface_idx ))')
+		dot := if node.left_type.is_ptr() { '->' } else { '.' }
+		g.write(')${dot}_interface_idx ))')
 		return
 	}
 	if node.name == 'str' {