From 73c1f08776688f18940abcbff5d5b9f0f594049d Mon Sep 17 00:00:00 2001
From: Lucas Perlind <perlindluca@gmail.com>
Date: Fri, 14 Oct 2022 18:22:59 +1100
Subject: Improve error messages with 'using _'

---
 src/check_decl.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/check_decl.cpp')

diff --git a/src/check_decl.cpp b/src/check_decl.cpp
index 9d043e60a..bb56749af 100644
--- a/src/check_decl.cpp
+++ b/src/check_decl.cpp
@@ -1488,6 +1488,11 @@ void check_proc_body(CheckerContext *ctx_, Token token, DeclInfo *decl, Type *ty
 				if (!(e->flags & EntityFlag_Using)) {
 					continue;
 				}
+				if (is_blank_ident(e->token)) {
+                    error(e->token, "'using' a procedure parameter requires a non blank identifier");
+					break;
+				}
+
 				bool is_value = (e->flags & EntityFlag_Value) != 0 && !is_type_pointer(e->type);
 				String name = e->token.string;
 				Type *t = base_type(type_deref(e->type));
-- 
cgit v1.2.3