linux-kernel - Re: [PATCH v1] tools build: Fix a number of Wconversion warnings

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Message-ID: <CAP-5=fWvsy74obPj7Fs2ghUHNVu1A5ywkpjOU6ibC7vvWu2b0w@mail.gmail.com>
Date: Mon, 10 Feb 2025 10:22:12 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>, 
	linux-perf-users@...r.kernel.org, bpf@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Leo Yan <leo.yan@....com>
Subject: Re: [PATCH v1] tools build: Fix a number of Wconversion warnings

On Mon, Jan 6, 2025 at 1:54 PM Ian Rogers <irogers@...gle.com> wrote:
>
> There's some expressed interest in having the compiler flag
> -Wconversion detect at build time certain kinds of potential problems:
> https://lore.kernel.org/lkml/20250103182532.GB781381@e132581.arm.com/
>
> As feature detection passes -Wconversion from CFLAGS when set, the
> feature detection compile tests need to not fail because of
> -Wconversion as the failure will be interpretted as a missing
> feature. Switch various types to avoid the -Wconversion issue, the
> exact meaning of the code is unimportant as it is typically looking
> for header file definitions.
>
> Signed-off-by: Ian Rogers <irogers@...gle.com>

Ping. Also:
Reviewed-by: James Clark <james.clark@...aro.org>
Would be nice to be cleaner wrt compiler warnings.

Thanks,
Ian