From de3087a7e9b7590ab8122d547e8ae9ac0d191b21 Mon Sep 17 00:00:00 2001
From: acqn <acqn163@outlook.com>
Date: Sun, 14 Jan 2024 00:19:11 +0800
Subject: [PATCH] Removed the extra "unused parameter" warning when the
 parameter had an duplicated identifier error.

---
 src/cc65/symtab.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/cc65/symtab.c b/src/cc65/symtab.c
index a76e60450..d3544bfc4 100644
--- a/src/cc65/symtab.c
+++ b/src/cc65/symtab.c
@@ -170,7 +170,8 @@ static void CheckSymTable (SymTable* Tab)
                 if (SymIsDef (Entry) && !SymIsRef (Entry) &&
                     !SymHasAttr (Entry, atUnused)) {
                     if (Flags & SC_PARAM) {
-                        if (IS_Get (&WarnUnusedParam)) {
+                        if (IS_Get (&WarnUnusedParam) &&
+                            !IsAnonName (Entry->Name)) {
                             Warning ("Parameter '%s' is never used", Entry->Name);
                         }
                     } else if ((Flags & SC_TYPEMASK) == SC_FUNC) {