From: Mathieu Malaterre <malat@debian.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mathieu Malaterre <malat@debian.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Balbir Singh <bsingharora@gmail.com>,
Nicholas Piggin <npiggin@gmail.com>,
Vaibhav Jain <vaibhav@linux.vnet.ibm.com>,
Breno Leitao <leitao@debian.org>,
Yisheng Xie <xieyisheng1@huawei.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] powerpc/xmon: avoid warnings about variables that might be clobbered by ‘longjmp’
Date: Fri, 22 Jun 2018 21:27:17 +0200 [thread overview]
Message-ID: <20180622192718.24242-1-malat@debian.org> (raw)
Move initialization of variables after data definitions. This silence
warnings treated as error with W=1:
arch/powerpc/xmon/xmon.c:3389:14: error: variable ‘name’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
arch/powerpc/xmon/xmon.c:3100:22: error: variable ‘tsk’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
arch/powerpc/xmon/xmon.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 47166ad2a669..982848c784ff 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3097,10 +3097,11 @@ static void show_pte(unsigned long addr)
static void show_tasks(void)
{
unsigned long tskv;
- struct task_struct *tsk = NULL;
+ struct task_struct *tsk;
printf(" task_struct ->thread.ksp PID PPID S P CMD\n");
+ tsk = NULL;
if (scanhex(&tskv))
tsk = (struct task_struct *)tskv;
@@ -3386,10 +3387,11 @@ static void xmon_print_symbol(unsigned long address, const char *mid,
const char *after)
{
char *modname;
- const char *name = NULL;
+ const char *name;
unsigned long offset, size;
printf(REG, address);
+ name = NULL;
if (setjmp(bus_error_jmp) == 0) {
catch_memory_errors = 1;
sync();
--
2.11.0
next reply other threads:[~2018-06-22 19:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 19:27 Mathieu Malaterre [this message]
2018-06-23 16:59 ` [PATCH] powerpc/xmon: avoid warnings about variables that might be clobbered by ‘longjmp’ christophe leroy
2018-06-23 19:47 ` Segher Boessenkool
2018-06-26 6:27 ` Mathieu Malaterre
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