From 9dce8194a8a632f194557aaf9658285997366272 Mon Sep 17 00:00:00 2001
From: yuyi <yuyi98@163.com>
Date: Thu, 27 Jan 2022 19:20:56 +0800
Subject: [PATCH] cgen: fix error of method calls on nested embedded structs 
 (#13292)

---
 vlib/v/gen/c/fn.v                             |  9 +++--
 .../struct_multi_embed_method_call_test.v     | 33 +++++++++++++++++++
 2 files changed, 40 insertions(+), 2 deletions(-)
 create mode 100644 vlib/v/tests/struct_multi_embed_method_call_test.v

diff --git a/vlib/v/gen/c/fn.v b/vlib/v/gen/c/fn.v
index f0c7680435..073345e19f 100644
--- a/vlib/v/gen/c/fn.v
+++ b/vlib/v/gen/c/fn.v
@@ -1047,10 +1047,15 @@ fn (mut g Gen) method_call(node ast.CallExpr) {
 		} else {
 			g.expr(node.left)
 		}
-		for embed in node.from_embed_types {
+		for i, embed in node.from_embed_types {
 			embed_sym := g.table.sym(embed)
 			embed_name := embed_sym.embed_name()
-			if node.left_type.is_ptr() {
+			is_left_ptr := if i == 0 {
+				node.left_type.is_ptr()
+			} else {
+				node.from_embed_types[i - 1].is_ptr()
+			}
+			if is_left_ptr {
 				g.write('->')
 			} else {
 				g.write('.')
diff --git a/vlib/v/tests/struct_multi_embed_method_call_test.v b/vlib/v/tests/struct_multi_embed_method_call_test.v
new file mode 100644
index 0000000000..5db5428c50
--- /dev/null
+++ b/vlib/v/tests/struct_multi_embed_method_call_test.v
@@ -0,0 +1,33 @@
+pub struct Boundary {}
+
+pub fn (b Boundary) contains(x int, y int) bool {
+	return false
+}
+
+pub struct Base {
+	Boundary
+}
+
+pub fn (mut b Base) on_event(x int, y int) {
+	if b.Boundary.contains(x, y) {
+	}
+	if b.contains(x, y) {
+	}
+}
+
+pub struct ListBox {
+	Base
+}
+
+pub fn (mut lb ListBox) on_event(x int, y int) {
+	if lb.Base.Boundary.contains(x, y) {
+	}
+	if lb.contains(x, y) {
+	}
+}
+
+fn test_struct_multi_embed_method_call() {
+	mut list_box := ListBox{}
+	list_box.on_event(11, 22)
+	assert true
+}