From d6aa85d059ad124e58b22a74d32f310d60f5c189 Mon Sep 17 00:00:00 2001
From: yuyi <yuyi98@163.com>
Date: Tue, 17 May 2022 17:05:10 +0800
Subject: [PATCH] parser: fix panic for parse invalid map type (#14431)

---
 vlib/v/parser/parse_type.v                 |  4 ++--
 vlib/v/tests/parse_invalid_map_type_test.v | 13 +++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 vlib/v/tests/parse_invalid_map_type_test.v

diff --git a/vlib/v/parser/parse_type.v b/vlib/v/parser/parse_type.v
index dc6f045137..cc6fd76f42 100644
--- a/vlib/v/parser/parse_type.v
+++ b/vlib/v/parser/parse_type.v
@@ -113,12 +113,12 @@ pub fn (mut p Parser) parse_map_type() ast.Type {
 	}
 	p.check(.lsbr)
 	key_type := p.parse_type()
-	key_sym := p.table.sym(key_type)
-	is_alias := key_sym.kind == .alias
 	if key_type.idx() == 0 {
 		// error is reported in parse_type
 		return 0
 	}
+	key_sym := p.table.sym(key_type)
+	is_alias := key_sym.kind == .alias
 	key_type_supported := key_type in [ast.string_type_idx, ast.voidptr_type_idx]
 		|| key_sym.kind in [.enum_, .placeholder, .any]
 		|| ((key_type.is_int() || key_type.is_float() || is_alias) && !key_type.is_ptr())
diff --git a/vlib/v/tests/parse_invalid_map_type_test.v b/vlib/v/tests/parse_invalid_map_type_test.v
new file mode 100644
index 0000000000..1a562db02c
--- /dev/null
+++ b/vlib/v/tests/parse_invalid_map_type_test.v
@@ -0,0 +1,13 @@
+import v.ast
+import v.parser
+import v.pref
+
+fn test_parser_map_type() {
+	result := parser.parse_text('a := map[*Node]bool', '', ast.new_table(), .parse_comments,
+		&pref.Preferences{
+		output_mode: .silent
+		is_fmt: true
+	})
+	println(result)
+	assert true
+}