From b5b81a87c764e579256cb533ed5ace8315e9ceff Mon Sep 17 00:00:00 2001
From: Jan Beulich <JBeulich@suse.com>
Date: Tue, 20 Jan 2015 12:52:48 +0000
Subject: [PATCH] kconfig: don't silently ignore unhandled characters

At the very least we should tell people that what they wrote is not
what the utility understands.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
 config/zconf.l | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/config/zconf.l b/config/zconf.l
index 54058e0..960b1e6 100644
--- a/config/zconf.l
+++ b/config/zconf.l
@@ -141,7 +141,12 @@ n	[A-Za-z0-9_]
 	}
 	#.*	/* comment */
 	\\\n	current_file->lineno++;
-	.
+	[[:blank:]]+
+	.	{
+		fprintf(stderr,
+		        "%s:%d:warning: ignoring unsupported character '%c'\n",
+		        zconf_curname(), zconf_lineno(), *yytext);
+	}
 	<<EOF>> {
 		BEGIN(INITIAL);
 	}
-- 
2.31.1