From 2ce1647ea0f84b6ba1e94be5367d4f7bd3536b38 Mon Sep 17 00:00:00 2001
From: yuyi <yuyi98@163.com>
Date: Wed, 15 Dec 2021 19:21:21 +0800
Subject: [PATCH] cgen: fix error of embedded struct generating interface_table
 (#12847)

---
 vlib/v/gen/c/cgen.v | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index bdb9263e82..4b74197883 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -7338,7 +7338,12 @@ static inline $interface_name I_${cctype}_to_Interface_${interface_name}($cctype
 			if st_sym.info is ast.Struct {
 				for embed in st_sym.info.embeds {
 					embed_sym := g.table.get_type_symbol(embed)
-					methods << embed_sym.methods
+					method_names := methods.map(it.name)
+					for embed_method in embed_sym.methods {
+						if embed_method.name !in method_names {
+							methods << embed_method
+						}
+					}
 				}
 			}
 			for method in methods {