* [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); "
@ 2016-06-09 16:02 Dongli Zhang
2016-06-09 16:29 ` Wei Liu
2016-06-14 19:22 ` Olaf Hering
0 siblings, 2 replies; 4+ messages in thread
From: Dongli Zhang @ 2016-06-09 16:02 UTC (permalink / raw)
To: xen-devel, konrad.wilk, ross.lagerwall, ian.jackson, wei.liu2
Local variable "j" would be used only when "i == ARRAY_SIZE(main_options)"
is true. Thus, it is not necessary to update "j" when "i ==
ARRAY_SIZE(main_options)" is false.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
tools/misc/xen-livepatch.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/misc/xen-livepatch.c b/tools/misc/xen-livepatch.c
index 28f339a..3162489 100644
--- a/tools/misc/xen-livepatch.c
+++ b/tools/misc/xen-livepatch.c
@@ -435,8 +435,7 @@ int main(int argc, char *argv[])
"'xen-livepatch help'\n", argv[1]);
return 1;
}
- } else
- j = ARRAY_SIZE(action_options);
+ }
xch = xc_interface_open(0,0,0);
if ( !xch )
--
1.9.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); "
2016-06-09 16:02 [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); " Dongli Zhang
@ 2016-06-09 16:29 ` Wei Liu
2016-06-14 19:22 ` Olaf Hering
1 sibling, 0 replies; 4+ messages in thread
From: Wei Liu @ 2016-06-09 16:29 UTC (permalink / raw)
To: Dongli Zhang; +Cc: ross.lagerwall, ian.jackson, wei.liu2, xen-devel
On Fri, Jun 10, 2016 at 12:02:52AM +0800, Dongli Zhang wrote:
> Local variable "j" would be used only when "i == ARRAY_SIZE(main_options)"
> is true. Thus, it is not necessary to update "j" when "i ==
> ARRAY_SIZE(main_options)" is false.
>
> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thanks, I've queued this up in my next batch.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); "
2016-06-09 16:02 [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); " Dongli Zhang
2016-06-09 16:29 ` Wei Liu
@ 2016-06-14 19:22 ` Olaf Hering
2016-06-14 20:07 ` Konrad Rzeszutek Wilk
1 sibling, 1 reply; 4+ messages in thread
From: Olaf Hering @ 2016-06-14 19:22 UTC (permalink / raw)
To: Dongli Zhang; +Cc: ross.lagerwall, ian.jackson, wei.liu2, xen-devel
On Fri, Jun 10, Dongli Zhang wrote:
> Local variable "j" would be used only when "i == ARRAY_SIZE(main_options)"
> is true. Thus, it is not necessary to update "j" when "i ==
> ARRAY_SIZE(main_options)" is false.
This breaks the build with gcc45:
[ 153s] cc1: warnings being treated as errors
[ 153s] xen-livepatch.c: In function 'main':
[ 153s] xen-livepatch.c:415:12: error: 'j' may be used uninitialized in this function
[ 153s] make[3]: *** [xen-livepatch.o] Error 1
Olaf
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); "
2016-06-14 19:22 ` Olaf Hering
@ 2016-06-14 20:07 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 4+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-06-14 20:07 UTC (permalink / raw)
To: Olaf Hering
Cc: Dongli Zhang, ross.lagerwall, ian.jackson, wei.liu2, xen-devel
On Tue, Jun 14, 2016 at 09:22:45PM +0200, Olaf Hering wrote:
> On Fri, Jun 10, Dongli Zhang wrote:
>
> > Local variable "j" would be used only when "i == ARRAY_SIZE(main_options)"
> > is true. Thus, it is not necessary to update "j" when "i ==
> > ARRAY_SIZE(main_options)" is false.
>
> This breaks the build with gcc45:
>
> [ 153s] cc1: warnings being treated as errors
> [ 153s] xen-livepatch.c: In function 'main':
> [ 153s] xen-livepatch.c:415:12: error: 'j' may be used uninitialized in this function
> [ 153s] make[3]: *** [xen-livepatch.o] Error 1
>
> Olaf
?
diff --git a/tools/misc/xen-livepatch.c b/tools/misc/xen-livepatch.c
index 3162489..62c072e 100644
--- a/tools/misc/xen-livepatch.c
+++ b/tools/misc/xen-livepatch.c
@@ -412,7 +412,7 @@ struct {
int main(int argc, char *argv[])
{
- int i, j, ret;
+ int i, j = 0, ret;
if ( argc <= 1 )
{
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^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-06-14 20:07 UTC | newest]
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2016-06-09 16:02 [PATCH 1/1] tools/livepatch: cleanup unnecessary "j = ARRAY_SIZE(action_options); " Dongli Zhang
2016-06-09 16:29 ` Wei Liu
2016-06-14 19:22 ` Olaf Hering
2016-06-14 20:07 ` Konrad Rzeszutek Wilk
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