[Beignet] [PATCH] utests: Add code to trigger one printf bug in nested for loops.

[Zhigang Gong]

Sorry, typo, should be "cc to Junyan".

> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> Zhigang Gong
> Sent: Thursday, September 18, 2014 9:14 AM
> To: Chuanbo Weng
> Cc: junyan.he at inbox.com; beignet at lists.freedesktop.org
> Subject: Re: [Beignet] [PATCH] utests: Add code to trigger one printf bug
in
> nested for loops.
> 
> cc to Ruiling,
> 
> could you help to look into this issue?
> 
> On Wed, Sep 17, 2014 at 10:58:29AM +0800, Chuanbo Weng wrote:
> > There is some incorrect result in nested for loops. The single for
> > loop and 1st nested for loops test get correct result, but the 2nd
> > nested for loops get incorrect result.
> >
> > Signed-off-by: Chuanbo Weng <chuanbo.weng at intel.com>
> > ---
> >  kernels/test_printf.cl | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
> >
> > diff --git a/kernels/test_printf.cl b/kernels/test_printf.cl index
> > 84bb478..d8010d7 100644
> > --- a/kernels/test_printf.cl
> > +++ b/kernels/test_printf.cl
> > @@ -31,6 +31,24 @@ test_printf(void)
> >            printf("#### output a float to int is %d\n", f);
> >      }
> >
> > +  for(int i = 0; i < 3; i++)
> > +    if(x == 0 && y == 0 && z == 0)
> > +      printf(">>>>>> Test printf in for loop: i = %d\n", i);
> > +
> > +  if(x == 0 && y == 0 && z == 0)
> > +	  printf("1st nested loops test:\n");
> > +  for(int i = 0; i < 3; i++)
> > +    for(int j = 0; j < 4; j++)
> > +      if(x == 0 && y == 0 && z == 0)
> > +        printf(">>>>>> Test printf in nested loops: i = %d, j =
> > +%d\n", i, j);
> > +
> > +  if(x == 0 && y == 0 && z == 0)
> > +	  printf("2nd nested loops test:\n");
> > +  for(int i = 0; i < 10; i++)
> > +    for(int j = 0; j < 5; j++)
> > +      if(x == 0 && y == 0 && z == 0)
> > +        printf(">>>>>> Test printf in nested loops: i = %d, j =
> > +%d\n", i, j);
> > +
> >    if (x == 0 && y == 0 && z == 0) {
> >      printf("--- End to the printf test ---\n");
> >    }
> > --
> > 1.9.1
> >
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