All of lore.kernel.org
 help / color / mirror / Atom feed
From: Simon Glass <sjg@chromium.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/9] Fix strict-aliasing warning in dlmalloc
Date: Fri, 6 Jan 2012 12:39:08 -0800	[thread overview]
Message-ID: <CAPnjgZ1OxJJsSEodSM-fqTN791mW-UezqWjFLQBAS-4RbFHJkQ@mail.gmail.com> (raw)
In-Reply-To: <20120106064836.C35251FD3DA@gemini.denx.de>

Hi Wolfgang,

On Thu, Jan 5, 2012 at 10:48 PM, Wolfgang Denk <wd@denx.de> wrote:
> Dear Simon Glass,
>
> In message <1325822097-15227-3-git-send-email-sjg@chromium.org> you wrote:
>> This fixes the following warnings in dlmalloc seen with my gcc 4.6.
>
> Which exact version is this?
>
>> dlmalloc.c: In function 'malloc_bin_reloc':
>> dlmalloc.c:1493: warning: dereferencing pointer 'p' does break strict-aliasing rules
>> dlmalloc.c:1493: warning: dereferencing pointer 'p' does break strict-aliasing rules
>> dlmalloc.c:1490: note: initialized from here
>> dlmalloc.c:1493: note: initialized from here
>
> Can you please tell me at least one board configuration that throws
> this error (preferrably ppc, arm or mips) ?

I can't see one with those architectures. It does happen for others though:

$ (for b in $(cd ~/cosarm/buildall/logs.master.9a42098 && grep -l 1493
*ERR |sed 's/.ERR//'); do grep $b boards.cfg; done ) |awk '{print $2,
$1}'
avr32 atngw100
avr32 atstk1002
avr32 atstk1003
avr32 atstk1004
avr32 atstk1006
mips dbau1000
mips dbau1100
mips dbau1500
mips dbau1550
mips dbau1550_el
avr32 favr-32-ezkit
avr32 grasshopper
mips gth2
avr32 hammerhead
mips incaip
mips incaip_100MHz
mips incaip_133MHz
mips incaip_150MHz
m68k M54451EVB
m68k M54451EVB_stmicro
m68k M54451EVB_stmicro
m68k M54455EVB_a66
m68k M54455EVB
m68k M54455EVB_a66
m68k M54455EVB_i66
m68k M54455EVB_intel
m68k M54455EVB_stm33
m68k M54455EVB_i66
m68k M54455EVB_intel
m68k M54455EVB_stm33
m68k M5475AFE
m68k M5475BFE
m68k M5475CFE
m68k M5475DFE
m68k M5475EFE
m68k M5475FFE
m68k M5475GFE
m68k M5485AFE
m68k M5485BFE
m68k M5485CFE
m68k M5485DFE
m68k M5485EFE
m68k M5485FFE
m68k M5485GFE
m68k M5485HFE
avr32 mimc200
mips qemu_mips
mips vct_platinumavc
mips vct_platinumavc_onenand
mips vct_platinumavc_onenand_small
mips vct_platinumavc_small
mips vct_platinumavc_onenand
mips vct_platinumavc_onenand_small
mips vct_platinumavc_onenand_small
mips vct_platinumavc_small
mips vct_platinum
mips vct_platinumavc
mips vct_platinumavc_onenand
mips vct_platinumavc_onenand_small
mips vct_platinumavc_small
mips vct_platinum_onenand
mips vct_platinum_onenand_small
mips vct_platinum_small
mips vct_platinum_onenand
mips vct_platinum_onenand_small
mips vct_platinum_onenand_small
mips vct_platinum_small
mips vct_premium
mips vct_premium_onenand
mips vct_premium_onenand_small
mips vct_premium_small
mips vct_premium_onenand
mips vct_premium_onenand_small
mips vct_premium_onenand_small
mips vct_premium_small

Using built-in specs.
Target: mips-linux
Configured with: /home/tony/buildall/src/gcc/configure
--target=mips-linux --enable-targets=all
--prefix=/opt/cross/gcc-4.4.4-nolibc/mips-linux/ --enable-languages=c
--with-newlib --without-headers --enable-sjlj-exceptions
--with-system-libunwind --disable-nls --disable-threads
--disable-shared --disable-libmudflap --disable-libssp
--disable-libgomp --disable-decimal-float --enable-checking=release
--with-mpfr=/home/tony/buildall/src/sys
--with-gmp=/home/tony/buildall/src/sys
Thread model: single
gcc version 4.4.4 (GCC)

Using built-in specs.
Target: m68k-linux
Configured with: /home/tony/buildall/src/gcc/configure
--target=m68k-linux --enable-targets=all
--prefix=/opt/cross/gcc-4.4.4-nolibc/m68k-linux/ --enable-languages=c
--with-newlib --without-headers --enable-sjlj-exceptions
--with-system-libunwind --disable-nls --disable-threads
--disable-shared --disable-libmudflap --disable-libssp
--disable-libgomp --disable-decimal-float --enable-checking=release
--with-mpfr=/home/tony/buildall/src/sys
--with-gmp=/home/tony/buildall/src/sys
Thread model: single
gcc version 4.4.4 (GCC)

Using built-in specs.
Target: powerpc-linux
Configured with: /home/tony/buildall/src/gcc/configure
--target=powerpc-linux --enable-targets=all
--prefix=/opt/cross/gcc-4.4.4-nolibc/powerpc-linux/
--enable-languages=c --with-newlib --without-headers
--enable-sjlj-exceptions --with-system-libunwind --disable-nls
--disable-threads --disable-shared --disable-libmudflap
--disable-libssp --disable-libgomp --disable-decimal-float
--enable-checking=release --with-mpfr=/home/tony/buildall/src/sys
--with-gmp=/home/tony/buildall/src/sys
Thread model: single
gcc version 4.4.4 (GCC)

  reply	other threads:[~2012-01-06 20:39 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-06  3:54 [U-Boot] [PATCH 0/9] Fix a few warnings that bug me Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 1/9] usb: Fix strict-aliasing warning in host/ohci-hcd.c Simon Glass
2012-01-08  9:32   ` Mike Frysinger
2012-01-08 18:02     ` Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 2/9] Fix strict-aliasing warning in dlmalloc Simon Glass
2012-01-06  6:48   ` Wolfgang Denk
2012-01-06 20:39     ` Simon Glass [this message]
2012-01-06 23:37       ` Wolfgang Denk
2012-01-08  0:57         ` Simon Glass
2012-01-08  9:27       ` Mike Frysinger
2012-08-13 15:25   ` Andreas Bießmann
2012-09-04 21:25     ` Andreas Bießmann
2012-01-06  3:54 ` [U-Boot] [PATCH 3/9] mpc5xxx: Fix strict-aliasing warnings in usb_ohci.c Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 4/9] ppc4xx: " Simon Glass
2012-10-16  6:28   ` Marek Vasut
2012-10-16 13:35     ` Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 5/9] sandbox: sort header files in os.c Simon Glass
2012-01-08  8:49   ` Mike Frysinger
2012-01-09 22:17     ` Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 6/9] sandbox: Add required header to os.c Simon Glass
2012-01-08  8:49   ` Mike Frysinger
2012-01-09 22:18     ` Simon Glass
2012-01-06  3:54 ` [U-Boot] [PATCH 7/9] Remove CONFIG_SYS_EXTBDINFO from snapper9260.h Simon Glass
2012-02-22 11:07   ` Stefano Babic
2012-03-27 16:58   ` Anatolij Gustschin
2012-01-06  3:54 ` [U-Boot] [PATCH 8/9] m68k: Change memsz to a signed char to avoid warning Simon Glass
2012-01-08  9:29   ` Mike Frysinger
2012-02-22 12:01   ` Stefano Babic
2012-01-06  3:54 ` [U-Boot] [PATCH 9/9] ppc: Change memsz variable to signed char Simon Glass
2012-01-08  9:29   ` Mike Frysinger
2012-02-22 12:00   ` Stefano Babic
2012-01-06  6:20 ` [U-Boot] [PATCH 0/9] Fix a few warnings that bug me Wolfgang Denk
2012-01-06  6:28   ` Simon Glass
2012-02-20 18:49     ` Simon Glass
2012-02-21 10:20       ` Stefano Babic
2012-02-21 13:49         ` Stefano Babic
2012-02-21 17:06         ` Mike Frysinger
2012-02-21 17:15           ` Stefano Babic
2012-02-21 18:40             ` Simon Glass
2012-02-22  5:35               ` Mike Frysinger
2012-02-22 11:06               ` Stefano Babic
2012-03-03 14:31               ` Wolfgang Denk
2012-03-05 18:22 ` Marek Vasut
2012-03-05 18:33   ` Simon Glass
2012-03-05 18:42     ` Andy Pont
2012-03-05 19:17       ` Wolfgang Denk
2012-03-05 18:46     ` Marek Vasut

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAPnjgZ1OxJJsSEodSM-fqTN791mW-UezqWjFLQBAS-4RbFHJkQ@mail.gmail.com \
    --to=sjg@chromium.org \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.