linux-kernel - Re: linux-next: build failure after merge of the perf tree

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Message-ID: <CAM9d7cjNAiE6bdSoQKsAqQcHBm1APz6C+-vQwu4BTB5R83dEgg@mail.gmail.com>
Date:   Tue, 24 Oct 2023 17:34:33 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the perf tree

Hello,

On Tue, Oct 24, 2023 at 4:27 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging the perf tree, today's linux-next build (native perf)
> failed like this:
>
> perf/util/pmu-flex.c:1812:1: error: unterminated comment
>  1812 | /** Setup the input buffer state to scan a string. The next call to yylex() will
>       | ^
> perf/util/pmu-flex.c:550:24: error: 'yy_fatal_error' used but never defined [-Werror]
>   550 | static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
>       |                        ^~~~~~~~~~~~~~
>
> I don't know what caused this, but the above file looks fine and redoing
> the build works, so it may be some timing problem when doing an
> incremental build?

Yeah, I think I saw this error before.  Looks like a timing issue
but I believe something is wrong with it.  I'll take a look.

Thanks,
Namhyung