Re: [PATCH v6 2/2] Kbuild: implement support for DWARF v5

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On Fri, Jan 29, 2021 at 3:25 PM Nick Desaulniers
<ndesaulniers@xxxxxxxxxx> wrote:
>
> On Fri, Jan 29, 2021 at 2:10 PM Jakub Jelinek <jakub@xxxxxxxxxx> wrote:
> >
> > On Fri, Jan 29, 2021 at 02:05:59PM -0800, Nick Desaulniers wrote:
> > > Ah, I see.  Then I should update the script I add
> > > (scripts/test_dwarf5_support.sh) to feature detect that bug, since
> > > it's the latest of the bunch.  Also, should update my comment to note
> > > that this requires binutils greater than 2.35.1 (which is what I have,
> > > which fails, since the backport landed in ... what?!)  How was this
> > > backported to 2.35
> > > (https://sourceware.org/bugzilla/show_bug.cgi?id=27195#c12, Jan 26
> > > 2021) when binutils-2_35_1 was tagged sept 19 2020?  Or will there be
> > > a binutils 2.35.2 point release?
> >
> > AFAIK yes, soon.
>
> Err...perhaps https://sourceware.org/bugzilla/show_bug.cgi?id=27195
> was about `.file 0`, but it looks like `.file 1 "filename" md5
> 0x7a0b65214090b6693bd1dc24dd248245` without -gdwarf-5. Specifically
> the md5 ... .
>
> So https://sourceware.org/bugzilla/show_bug.cgi?id=25611 needs a rework perhaps?

$ echo '.file 1 "filename" md5 0x7a0b65214090b6693bd1dc24dd248245' |
binutils-gdb/gas/as -
{standard input}: Assembler messages:
{standard input}:1: Error: junk at end of line, first unrecognized
character is `m'
$ echo '.file 1 "filename" md5 0x7a0b65214090b6693bd1dc24dd248245' |
binutils-gdb/gas/as -gdwarf-5 -
$

https://sourceware.org/bugzilla/show_bug.cgi?id=27280
-- 
Thanks,
~Nick Desaulniers



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