[Buildroot] Analysis of build results for 2018-08-17

Chris Packham judge.packham at gmail.com
Sat Aug 18 20:40:55 UTC 2018


On Sun, 19 Aug 2018, 7:56 AM Thomas Petazzoni, <thomas.petazzoni at bootlin.com>
wrote:

>
> >          sh4 |             micropython-v1.9.3 | NOK |
> http://autobuild.buildroot.net/results/2b18b9e1449f91d0c8d72ceadf298b5b37f5c9c4
> |
>
>
> cc1: warnings being treated as errors
> ../py/objdict.c: In function 'dict_view_print':
> ../py/objdict.c:458: error: dereferencing pointer 'o' does break
> strict-aliasing rules
> ../py/objdict.c:457: error: dereferencing pointer 'o' does break
> strict-aliasing rules
> ../py/objdict.c:456: error: dereferencing pointer 'o' does break
> strict-aliasing rules
> ../py/objdict.c:455: error: dereferencing pointer 'o' does break
> strict-aliasing rules
> ../py/objdict.c:454: note: initialized from here
>
> Not sure what is going on here, but it happens only on Hollis autobuilder:
>
>   http://autobuild.buildroot.net/?reason=micropython%
>
> Chris, perhaps you have an idea ?
>

I've tried reproducing this a few times with no luck. Initially I thought
it was due to a newer gcc generating new warnings, but then I tried gcc 8
and didn't see any issue.

>
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