From 8324a766e89fc2404bd3d707e9b3a27ffdf802da Mon Sep 17 00:00:00 2001
From: BigBlack <dhdony@gmail.com>
Date: Thu, 24 Jun 2021 17:39:42 +0800
Subject: [PATCH] checker: allow for `unsafe {*(p+1) = 22}` (#10557)

---
 vlib/v/checker/checker.v     | 3 +++
 vlib/v/tests/pointers_test.v | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 435e4b23a5..f651eced8f 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -1599,6 +1599,9 @@ fn (mut c Checker) fail_if_immutable(expr ast.Expr) (string, token.Position) {
 		ast.StructInit {
 			return '', pos
 		}
+		ast.InfixExpr {
+			return '', pos
+		}
 		else {
 			if !expr.is_lit() {
 				c.error('unexpected expression `$expr.type_name()`', expr.position())
diff --git a/vlib/v/tests/pointers_test.v b/vlib/v/tests/pointers_test.v
index 2d6e780f80..cb5dbfd50d 100644
--- a/vlib/v/tests/pointers_test.v
+++ b/vlib/v/tests/pointers_test.v
@@ -7,6 +7,8 @@ fn test_pointer_arithmetic() {
 		assert 2 == *parr
 		parr++
 		assert 3 == *parr
+		parr_add_one := *(parr + 1)
+		assert parr_add_one == 4
 		assert *(parr + 1) == 4
 	}
 }