[PATCH] setarch: don't return address of automatic variable

[Andreas Schwab <schwab@linux-m68k.org>]

On architectures without special personalities setarch uses the contents
of a local variable with automatic storage duration after return from
the function, causing it to report a spurious error.

$ setarch m68k
setarch: Kernel cannot set architecture to m68k

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
---
 sys-utils/setarch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c
index 7c0a63fbb262..703c36d864e1 100644
--- a/sys-utils/setarch.c
+++ b/sys-utils/setarch.c
@@ -131,7 +131,7 @@ static void __attribute__((__noreturn__)) usage(int archwrapper)
  */
 static struct arch_domain *init_arch_domains(void)
 {
-	struct utsname un;
+	static struct utsname un;
 	size_t i;
 
 	static struct arch_domain transitions[] =
-- 
2.20.1


-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."