Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1

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To: "Michael.Karcher" <Michael.Karcher@xxxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Subject: Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
From: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 20 Jan 2023 09:49:00 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, amd-gfx@xxxxxxxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-media@xxxxxxxxxxxxxxx, linux-wireless@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, Michael Karcher <kernel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>
In-reply-to: <1732342f-49fe-c20e-b877-bc0a340e1a50@fu-berlin.de>
References: <CAHk-=wgf929uGOVpiWALPyC7pv_9KbwB2EAvQ3C4woshZZ5zqQ@mail.gmail.com> <20221227082932.798359-1-geert@linux-m68k.org> <alpine.DEB.2.22.394.2212270933530.311423@ramsan.of.borg> <c05bee5d-0d69-289b-fe4b-98f4cd31a4f5@physik.fu-berlin.de> <CAMuHMdXNJveXHeS=g-aHbnxtyACxq1wCeaTg8LbpYqJTCqk86g@mail.gmail.com> <3800eaa8-a4da-b2f0-da31-6627176cb92e@physik.fu-berlin.de> <CAMuHMdWbBRkhecrqcir92TgZnffMe8ku2t7PcVLqA6e6F-j=iw@mail.gmail.com> <429140e0-72fe-c91c-53bc-124d33ab5ffa@physik.fu-berlin.de> <CAMuHMdWpHSsAB3WosyCVgS6+t4pU35Xfj3tjmdCDoyS2QkS7iw@mail.gmail.com> <0d238f02-4d78-6f14-1b1b-f53f0317a910@physik.fu-berlin.de> <1732342f-49fe-c20e-b877-bc0a340e1a50@fu-berlin.de>
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Hi Michael!

On 1/19/23 23:11, Michael.Karcher wrote:

I suggest to file a bug against gcc complaining about a "spurious warning",
and using "-Werror -Wno-error-sizeof-pointer-div" until gcc is adapted to
not emit the warning about the pointer division if the result is not used.


Could you post a kernel patch for that? I would be happy to test it on my
SH-7785CLR board. Also, I'm going to file a bug report against GCC.

Adrian

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Follow-Ups:
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: Michael Karcher

References:
- Re: Build regressions/improvements in v6.2-rc1
  - From: Geert Uytterhoeven
- Re: Build regressions/improvements in v6.2-rc1
  - From: John Paul Adrian Glaubitz
- Re: Build regressions/improvements in v6.2-rc1
  - From: Geert Uytterhoeven
- Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: John Paul Adrian Glaubitz
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: Geert Uytterhoeven
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: John Paul Adrian Glaubitz
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: Geert Uytterhoeven
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: John Paul Adrian Glaubitz
- Re: Calculating array sizes in C - was: Re: Build regressions/improvements in v6.2-rc1
  - From: Michael.Karcher

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