init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash

[ Upstream commit 3c3b110099bc6351d8d247d699ef15d608eea59d ]

When using dash as /bin/sh, the CC_HAS_ASM_GOTO_TIED_OUTPUT test fails
with a syntax error which is not the one we are looking for:

<stdin>: In function ‘foo’:
<stdin>:1:29: warning: missing terminating " character
<stdin>:1:29: error: missing terminating " character
<stdin>:2:5: error: expected ‘:’ before ‘+’ token
<stdin>:2:7: warning: missing terminating " character
<stdin>:2:7: error: missing terminating " character
<stdin>:2:5: error: expected declaration or statement at end of input

Removing '\n' solves this.

Fixes: 9a9386c201ea ("Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/init/Kconfig b/init/Kconfig
index 74f44b753d61db8373b11438b9371068051db4c3..f641518f4ac5cfe4089cf4d6c961d9140174b041 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -36,7 +36,7 @@ config CC_HAS_ASM_GOTO
 config CC_HAS_ASM_GOTO_TIED_OUTPUT
        depends on CC_HAS_ASM_GOTO_OUTPUT
        # Detect buggy gcc and clang, fixed in gcc-11 clang-14.
-       def_bool $(success,echo 'int foo(int *x) { asm goto (".long (%l[bar]) - .\n": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $CC -x c - -c -o /dev/null)
+       def_bool $(success,echo 'int foo(int *x) { asm goto (".long (%l[bar]) - .": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $CC -x c - -c -o /dev/null)
 
 config CC_HAS_ASM_GOTO_OUTPUT
        depends on CC_HAS_ASM_GOTO