From ce771876a38a94064e834f5b2a2499504ec63257 Mon Sep 17 00:00:00 2001
From: yuyi <yuyi98@163.com>
Date: Mon, 6 Jun 2022 11:29:22 +0800
Subject: [PATCH] cgen: fix nested map index check (fix #14683) (#14687)

---
 vlib/v/gen/c/index.v                 |  2 +-
 vlib/v/tests/nested_map_index_test.v | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 vlib/v/tests/nested_map_index_test.v

diff --git a/vlib/v/gen/c/index.v b/vlib/v/gen/c/index.v
index d70caa28fe..f92fb8f759 100644
--- a/vlib/v/gen/c/index.v
+++ b/vlib/v/gen/c/index.v
@@ -484,7 +484,7 @@ fn (mut g Gen) index_of_map(node ast.IndexExpr, sym ast.TypeSymbol) {
 			if !node.is_option {
 				g.or_block(tmp_opt, node.or_expr, elem_type)
 			}
-			g.write('\n$cur_line*($elem_type_str*)${tmp_opt}.data')
+			g.write('\n${cur_line}(*($elem_type_str*)${tmp_opt}.data)')
 		}
 	}
 }
diff --git a/vlib/v/tests/nested_map_index_test.v b/vlib/v/tests/nested_map_index_test.v
new file mode 100644
index 0000000000..cbee977577
--- /dev/null
+++ b/vlib/v/tests/nested_map_index_test.v
@@ -0,0 +1,24 @@
+struct Foo {
+mut:
+	foo map[int]Bar
+}
+
+struct Bar {
+mut:
+	bar map[int]string
+}
+
+fn test_nested_map_index() ? {
+	f := Foo{
+		foo: {
+			11: Bar{
+				bar: {
+					22: 'hello'
+				}
+			}
+		}
+	}
+	ret := f.foo[11]?.bar[22]?
+	println(ret)
+	assert ret == 'hello'
+}