* [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy
@ 2016-06-15 13:07 Dongli Zhang
2016-06-16 8:49 ` Wei Liu
0 siblings, 1 reply; 4+ messages in thread
From: Dongli Zhang @ 2016-06-15 13:07 UTC (permalink / raw)
To: xen-devel, konrad.wilk, ross.lagerwall, ian.jackson, wei.liu2
Initialise j to 0 to make some versions of gcc (e.g., gcc4.5/4.3) happy to
avoid compilation error by commit beba3693f7243e68bbe31fe3794da91068eeea5b.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
---
tools/misc/xen-livepatch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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 )
{
--
1.9.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy
2016-06-15 13:07 [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy Dongli Zhang
@ 2016-06-16 8:49 ` Wei Liu
0 siblings, 0 replies; 4+ messages in thread
From: Wei Liu @ 2016-06-16 8:49 UTC (permalink / raw)
To: Dongli Zhang; +Cc: ross.lagerwall, ian.jackson, wei.liu2, xen-devel
On Wed, Jun 15, 2016 at 09:07:53PM +0800, Dongli Zhang wrote:
> Initialise j to 0 to make some versions of gcc (e.g., gcc4.5/4.3) happy to
> avoid compilation error by commit beba3693f7243e68bbe31fe3794da91068eeea5b.
>
I suggest pasting in Olaf's exact error message here.
To avoid extra round trip, I propose updating the commit message as
followed:
Initialise j to 0 to make some versions of gcc (e.g., gcc4.5/4.3) happy to
avoid compilation error by commit beba3693f7243e68bbe31fe3794da91068eeea5b.
Failure manifests with gcc 4.5 as:
[ 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
If you agree with this I will handle the updating while doing my next
sweep.
Wei.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy
@ 2016-06-16 21:47 Dongli Zhang
2016-06-17 10:02 ` Wei Liu
0 siblings, 1 reply; 4+ messages in thread
From: Dongli Zhang @ 2016-06-16 21:47 UTC (permalink / raw)
To: wei.liu2; +Cc: ross.lagerwall, xen-devel, ian.jackson
> I suggest pasting in Olaf's exact error message here.
>
> To avoid extra round trip, I propose updating the commit message as
> followed:
>
> Initialise j to 0 to make some versions of gcc (e.g., gcc4.5/4.3)
> happy to
> avoid compilation error by commit
> beba3693f7243e68bbe31fe3794da91068eeea5b.
>
> Failure manifests with gcc 4.5 as:
>
> [ 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
>
> If you agree with this I will handle the updating while doing my next
> sweep.
Sure. Feel free to update the commit message.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy
2016-06-16 21:47 Dongli Zhang
@ 2016-06-17 10:02 ` Wei Liu
0 siblings, 0 replies; 4+ messages in thread
From: Wei Liu @ 2016-06-17 10:02 UTC (permalink / raw)
To: Dongli Zhang; +Cc: ian.jackson, xen-devel, ross.lagerwall, wei.liu2
On Thu, Jun 16, 2016 at 02:47:51PM -0700, Dongli Zhang wrote:
>
> > I suggest pasting in Olaf's exact error message here.
> >
> > To avoid extra round trip, I propose updating the commit message as
> > followed:
> >
> > Initialise j to 0 to make some versions of gcc (e.g., gcc4.5/4.3)
> > happy to
> > avoid compilation error by commit
> > beba3693f7243e68bbe31fe3794da91068eeea5b.
> >
> > Failure manifests with gcc 4.5 as:
> >
> > [ 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
> >
> > If you agree with this I will handle the updating while doing my next
> > sweep.
>
>
> Sure. Feel free to update the commit message.
Thanks for confirming. This patch is now acked and queued.
Wei.
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-06-15 13:07 [PATCH 1/1] tools/livepatch: initialise j to 0 to make some versions of gcc happy Dongli Zhang
2016-06-16 8:49 ` Wei Liu
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2016-06-17 10:02 ` Wei Liu
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