From e31be9f5c426f6ac805d7ef9b23ff2bf21c84bcf Mon Sep 17 00:00:00 2001
From: yuyi <yuyi98@163.com>
Date: Thu, 17 Jun 2021 00:17:07 +0800
Subject: [PATCH] checker: fix generic fn assign  (#10479)

---
 vlib/v/checker/checker.v                      |  3 ++-
 .../generic_fn_assign_generics_struct_test.v  | 23 +++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 19af18757d..ee9266c9c3 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -3625,7 +3625,8 @@ pub fn (mut c Checker) assign_stmt(mut node ast.AssignStmt) {
 			}
 		}
 		if !is_blank_ident && !left.is_auto_deref_var() && !right.is_auto_deref_var()
-			&& right_sym.kind != .placeholder && left_sym.kind != .interface_ {
+			&& right_sym.kind != .placeholder && left_sym.kind != .interface_
+			&& !right_type_unwrapped.has_flag(.generic) && !left_type_unwrapped.has_flag(.generic) {
 			// Dual sides check (compatibility check)
 			c.check_expected(right_type_unwrapped, left_type_unwrapped) or {
 				// allow for ptr += 2
diff --git a/vlib/v/tests/generic_fn_assign_generics_struct_test.v b/vlib/v/tests/generic_fn_assign_generics_struct_test.v
index 87c7b18dd6..ef007aaf40 100644
--- a/vlib/v/tests/generic_fn_assign_generics_struct_test.v
+++ b/vlib/v/tests/generic_fn_assign_generics_struct_test.v
@@ -13,3 +13,26 @@ fn test_generics_assign_generics_struct() {
 	println('$x.v')
 	assert x.v == 1
 }
+
+// test generics assign generics struct_init
+struct Node<T> {
+pub mut:
+	val  T
+	next &Node<T> = 0
+}
+
+fn new<T>() &Node<T> {
+	return &Node<T>{}
+}
+
+fn (mut n Node<T>) add(val T) {
+	node := &Node<T>{val, 0}
+	n.next = node
+}
+
+fn test_generic_fn_assign_generic_struct_init() {
+	mut list := new<int>()
+	list.add(100)
+	println(list.next)
+	assert list.next.val == 100
+}