From: Masahiro Yamada masahiroy@kernel.org
[ Upstream commit 135b4957eac43af2aedf8e2a277b9540f33c2558 ]
$(error-if,...) is expanded to an empty string. Currently, it relies on eval_clause() returning xstrdup("") when all attempts for expansion fail, but the correct implementation is to make do_error_if() return xstrdup("").
Fixes: 1d6272e6fe43 ("kconfig: add 'info', 'warning-if', and 'error-if' built-in functions") Signed-off-by: Masahiro Yamada masahiroy@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- scripts/kconfig/preprocess.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c index 5ca2df790d3c..389814b02d06 100644 --- a/scripts/kconfig/preprocess.c +++ b/scripts/kconfig/preprocess.c @@ -111,7 +111,7 @@ static char *do_error_if(int argc, char *argv[]) if (!strcmp(argv[0], "y")) pperror("%s", argv[1]);
- return NULL; + return xstrdup(""); }
static char *do_filename(int argc, char *argv[])