linux-kernel - linux-next: build failure after merge of the rust tree

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Date:   Tue, 28 Sep 2021 14:09:32 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>
Cc:     Richard Weinberger <richard@....at>,
        Adam Bratschi-Kaye <ark.email@...il.com>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Ayaan Zaidi <zaidi.ayaan@...il.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Boris-Chengbiao Zhou <bobo1239@....de>,
        Douglas Su <d0u9.su@...look.com>, Finn Behrens <me@...enk.de>,
        Fox Chen <foxhlchen@...il.com>, Gary Guo <gary@...yguo.net>,
        Geoffrey Thomas <geofft@...reload.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sumera Priyadarsini <sylphrenadin@...il.com>,
        Sven Van Asbroeck <thesven73@...il.com>,
        Wedson Almeida Filho <wedsonaf@...gle.com>,
        Yuki Okushi <jtitor@...6.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the rust tree

Hi all,

After merging the rust tree, today's linux-next build (x86_64
allmodconfig) failed like this:

scripts/kconfig/confdata.c: In function 'rustc_cfg_print_symbol':
scripts/kconfig/confdata.c:669:9: warning: implicit declaration of function 'sym_escape_string_value'; did you mean 'sym_set_string_value'? [-Wimplicit-function-declaration]
  669 |   str = sym_escape_string_value(value);
      |         ^~~~~~~~~~~~~~~~~~~~~~~
      |         sym_set_string_value
scripts/kconfig/confdata.c:669:7: warning: assignment to 'const char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
  669 |   str = sym_escape_string_value(value);
      |       ^
/usr/bin/ld: scripts/kconfig/confdata.o: in function `rustc_cfg_print_symbol':
confdata.c:(.text+0x738): undefined reference to `sym_escape_string_value'

Caused by commit

  dc08d49444e9 ("Kbuild: add Rust support")

interacting with commit

  420a2bdbead2 ("kconfig: Refactor sym_escape_string_value")

from the kbuild tree.

I applied the following patch, but it doesn't seem quite right.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Tue, 28 Sep 2021 14:02:54 +1000
Subject: [PATCH] fixup for "kconfig: Refactor sym_escape_string_value"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 scripts/kconfig/confdata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index e1a739897d5a..096222531954 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -666,7 +666,7 @@ static void rustc_cfg_print_symbol(FILE *fp, struct symbol *sym, const char *val
 	case S_HEX:
 	case S_BOOLEAN:
 	case S_TRISTATE:
-		str = sym_escape_string_value(value);
+		str = sym_escape_string(sym);
 
 		/*
 		 * We don't care about disabled ones, i.e. no need for
-- 
2.33.0

-- 
Cheers,
Stephen Rothwell

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