Re: [Xen-devel] [xen-unstable-smoke bisection] complete build-arm64-xsm

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.03.18 at 03:29, <osstest-admin@xxxxxxxxxxxxxx> wrote:
> branch xen-unstable-smoke
> xenbranch xen-unstable-smoke
> job build-arm64-xsm
> testid xen-build
> 
> Tree: qemuu git://xenbits.xen.org/qemu-xen.git
> Tree: xen git://xenbits.xen.org/xen.git
> 
> *** Found and reproduced problem changeset ***
> 
>   Bug is in tree:  xen git://xenbits.xen.org/xen.git
>   Bug introduced:  b43501451733193b265de30fd79a764363a2a473
>   Bug not present: eef83fd2af0d4c78afec34c199c977fc97d8a0b3
>   Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/120707/ 
> 
> 
>   commit b43501451733193b265de30fd79a764363a2a473
>   Author: Doug Goldstein <cardoe@xxxxxxxxxx>
>   Date:   Mon Mar 12 23:06:51 2018 -0500
>   
>       tools: detect appropriate debug optimization level
>       
>       When building debug use -Og as the optimization level if its available,
>       otherwise retain the use of -O0. -Og has been added by GCC to enable all
>       optimizations that to not affect debugging while retaining full
>       debugability.
>       
>       Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
>       Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

Sadly altering optimization levels always has the potential of
triggering issues like this:

xc_dom_arm.c: In function 'meminit':
xc_dom_arm.c:446:5: error: 'p2m_size' may be used uninitialized in this 
function [-Werror=maybe-uninitialized]
     for ( pfn = 0; pfn < p2m_size; pfn++ )
     ^
cc1: all warnings being treated as errors
/home/osstest/build.120709.build-arm64-xsm/xen/tools/libxc/../../tools/Rules.mk:230:
 recipe for target 'xc_dom_arm.o' failed
make[5]: *** [xc_dom_arm.o] Error 1

Jan


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