From 7b0d1d9679d22235bf91c096bf061c02fc3ef1a6 Mon Sep 17 00:00:00 2001
From: acqn <acqn163@outlook.com>
Date: Fri, 13 Oct 2023 14:54:54 +0800
Subject: [PATCH] Added warning on concatenated string literals in _Pragma
 operations.

---
 src/cc65/scanner.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cc65/scanner.c b/src/cc65/scanner.c
index 409e778ab..00dde9e83 100644
--- a/src/cc65/scanner.c
+++ b/src/cc65/scanner.c
@@ -1157,6 +1157,11 @@ void NextToken (void)
         /* Check for string concatenation */
         if (CurTok.Tok == TOK_SCONST || CurTok.Tok == TOK_WCSCONST) {
             if (PrevTok.Tok == TOK_SCONST || PrevTok.Tok == TOK_WCSCONST) {
+                /* Warn on non-ISO behavior */
+                if (InPragmaParser) {
+                    Warning ("Concatenated string literals in _Pragma operation");
+                }
+
                 /* Concatenate strings */
                 ConcatLiteral (PrevTok.SVal, CurTok.SVal);