From bfef491df67022c56aab3b831044f8d259f9441f Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <masahiroy@kernel.org>
Date: Fri, 26 Jan 2024 22:30:10 +0900
Subject: [PATCH] kconfig: initialize sym->curr.tri to 'no' for all symbol
types again
Geert Uytterhoeven reported that commit 4e244c10eab3 ("kconfig: remove
unneeded symbol_empty variable") changed the default value of
CONFIG_LOG_CPU_MAX_BUF_SHIFT from 12 to 0.
As it turned out, this is an undefined behavior because sym_calc_value()
stopped setting the sym->curr.tri field for 'int', 'hex', and 'string'
symbols.
This commit restores the original behavior, where 'int', 'hex', 'string'
symbols are interpreted as false if used in boolean contexts.
CONFIG_LOG_CPU_MAX_BUF_SHIFT will default to 12 again, irrespective
of CONFIG_BASE_SMALL. Presumably, this is not the intended behavior,
as already reported [1], but this is another issue that should be
addressed by a separate patch.
[1]: https://lore.kernel.org/all/f6856be8-54b7-0fa0-1d17-39632bf29ada@oracle.com/
Fixes: 4e244c10eab3 ("kconfig: remove unneeded symbol_empty variable")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://lore.kernel.org/all/CAMuHMdWm6u1wX7efZQf=2XUAHascps76YQac6rdnQGhc8nop_Q@mail.gmail.com/
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
scripts/kconfig/symbol.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 3e808528aaeab..e9e9fb8d86746 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -345,6 +345,8 @@ void sym_calc_value(struct symbol *sym)
oldval = sym->curr;
+ newval.tri = no;
+
switch (sym->type) {
case S_INT:
newval.val = "0";
@@ -357,7 +359,7 @@ void sym_calc_value(struct symbol *sym)
break;
case S_BOOLEAN:
case S_TRISTATE:
- newval = symbol_no.curr;
+ newval.val = "n";
break;
default:
sym->curr.val = sym->name;
--
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