Re: [kbuild-all] Re: [PATCH] gcov: fail build on gcov_info size mismatch

[Rong Chen]

On 3/12/21 4:02 AM, Linus Torvalds wrote:
> On Thu, Mar 11, 2021 at 11:34 AM kernel test robot <lkp@xxxxxxxxx> wrote:
> > > > kernel/gcov/geninfosize.sh: 13: [: =: unexpected operator
> Wth? I'm not seeing how this can fail on nds32 - doesn't look like a
> bashism, everything is properly quoted, etc etc. Plus it's a
> cross-compile anyway, so the shell in question should be the same as
> on all the other architectures.
>
> Presumably the nds32 assembly contains something odd and unexpected,
> but with the quoting, I can't see how even that could matter.
>
> Yeah, the test itself could probably be simplified to testing both
> conditions at the same time:
>
>    [ "$a $b" = ".size .LPBX0," ]
>
> but that's a separate issue.
>
> Funky. What am I missing? Presumably something really stupid.
>
>                 Linus

Hi Linus,

The issue is from a=!, and [ "$a $b" = ".size .LPBX0," ] can avoid the 
error.

+ [ ! = .size -a ABI = .LPBX0, ]
./kernel/gcov/geninfosize.sh: 13: [: =: unexpected operator

Best Regards,
Rong Chen