linux-kernel - [PATCH] kconfig: check prompt for choice while parsing

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Date: Sun, 10 Mar 2024 22:45:15 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH] kconfig: check prompt for choice while parsing

This can be checked on-the-fly.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/kconfig/menu.c   | 3 ---
 scripts/kconfig/parser.y | 6 ++++++
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 840ce642ec43..8498481e6afe 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -561,9 +561,6 @@ void menu_finalize(struct menu *parent)
 		if (sym->type == S_UNKNOWN)
 			menu_warn(parent, "config symbol defined without type");
 
-		if (sym_is_choice(sym) && !parent->prompt)
-			menu_warn(parent, "choice must have a prompt");
-
 		/* Check properties connected to this symbol */
 		sym_check_prop(sym);
 		sym->flags |= SYMBOL_WARNED;
diff --git a/scripts/kconfig/parser.y b/scripts/kconfig/parser.y
index 22f616334585..b45bfaf0a02b 100644
--- a/scripts/kconfig/parser.y
+++ b/scripts/kconfig/parser.y
@@ -233,6 +233,12 @@ choice: T_CHOICE T_EOL
 
 choice_entry: choice choice_option_list
 {
+	if (!current_entry->prompt) {
+		fprintf(stderr, "%s:%d: error: choice must have a prompt\n",
+			current_entry->filename, current_entry->lineno);
+		yynerrs++;
+	}
+
 	$$ = menu_add_menu();
 };
 
-- 
2.40.1