From: Hans-Peter Nilsson <hans-peter.nilsson@axis.com>
To: amacleod@redhat.com
Cc: gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org
Subject: Re: cxx-mem-model merge [6 of 9] - libstdc++-v3
Date: Mon, 07 Nov 2011 00:54:00 -0000 [thread overview]
Message-ID: <201111070038.pA70cqwC023528@ignucius.se.axis.com> (raw)
In-Reply-To: <4EB328D7.9010309@redhat.com> (message from Andrew MacLeod on Fri, 4 Nov 2011 00:50:47 +0100)
> From: Andrew MacLeod <amacleod@redhat.com>
> Date: Fri, 4 Nov 2011 00:50:47 +0100
> These are the changes to libstdc++ to make use of the new atomics. I
> changed the files to use the new atomics, and bkoz did a shuffling of
> the include file layout to better suit the new c++ approach.
>
> previously, libstdc++ provided a locked implementation in atomic_0.h
> with the theory that eventually it would be used. The new scheme
> involves leaving non-lock-free implementations to an external library.
> This involved removing the old lock implementation and restructuring
> things now that multiple implementation dont have to be supported. SO
> a lot fo this is churn... 2 include files deleted and one merged into
> another one..
This (formally a change in the range 181027:181034) got me three
libstdc++ regressions for cris-elf, which has no "atomic"
support whatsoever (well, not the version represented in
"cris-elf"), so something is amiss at the bottom of the default
path:
Running /tmp/hpautotest-gcc1/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp ...
...
FAIL: 29_atomics/atomic_flag/clear/1.cc (test for excess errors)
WARNING: 29_atomics/atomic_flag/clear/1.cc compilation failed to produce executable
FAIL: 29_atomics/atomic_flag/test_and_set/explicit.cc (test for excess errors)
WARNING: 29_atomics/atomic_flag/test_and_set/explicit.cc compilation failed to produce executable
FAIL: 29_atomics/atomic_flag/test_and_set/implicit.cc (test for excess errors)
And the linker message is:
Executing on host: /tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc/g++ -shared-libgcc -B/tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc -nostdinc++ -L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/src -L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/src/.libs -nostdinc -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/ -isystem /tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/targ-include -isystem /tmp/hpautotest-gcc1/gcc/newlib/libc/include -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/cris -L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/libnosys -L/tmp/hpautotest-gcc1/gcc/libgloss/cris -B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/bin/ -B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/lib/ -isystem /tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/include -isystem /tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/sys-include -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./libgloss/cris/ -L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./libgloss/cris
-L/tmp/hpautotest-gcc1/gcc/libgloss/cris -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./libstdc++-v3/src/.libs -g -O2 -D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2 -g -O2 -DLOCALEDIR="." -nostdinc++ -I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/cris-elf -I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include -I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/libsupc++ -I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/include/backward -I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/testsuite/util /tmp/hpautotest-gcc1/gcc/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc -std=gnu++0x ./libtestc++.a -isystem /tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem /tmp/hpautotest-gcc1/gcc/newlib/libc/include -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./libgloss/cris/ -L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./libgloss/cris -L/tmp/hpautotest-gcc1/gcc/libgloss/cris -B/tmp/hpaut
otest-gcc1/cris-elf/gccobj/cris-elf/./newlib/ -L/tmp/hpautot!
est-gcc1
/cris-elf/gccobj/cris-elf/./newlib -sim3 -lm -o ./explicit.exe (timeout = 600)
/tmp/cc21Ui3S.o: In function `ZNSt11atomic_flag12test_and_setESt12memory_order':
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_base.h:264: undefined reference to `__atomic_exchange_1'
collect2: error: ld returned 1 exit status
compiler exited with status 1
output is:
/tmp/cc21Ui3S.o: In function `ZNSt11atomic_flag12test_and_setESt12memory_order':
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_base.h:264: undefined reference to `__atomic_exchange_1'
collect2: error: ld returned 1 exit status
brgds, H-P
next prev parent reply other threads:[~2011-11-07 0:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-03 23:52 Andrew MacLeod
2011-11-04 18:17 ` Jeff Law
2011-11-04 18:53 ` Andrew MacLeod
2011-11-07 0:54 ` Hans-Peter Nilsson [this message]
2011-11-07 4:48 ` Andrew MacLeod
2011-11-07 11:36 ` Hans-Peter Nilsson
2011-11-07 14:41 ` Andrew MacLeod
2011-11-07 14:56 ` Andrew MacLeod
2011-11-07 15:38 ` Hans-Peter Nilsson
2011-11-07 16:28 ` Joseph S. Myers
2011-11-07 17:24 ` Andrew MacLeod
2011-11-07 17:43 ` Hans-Peter Nilsson
2011-11-07 18:27 ` Andrew MacLeod
2011-11-08 6:45 ` Hans-Peter Nilsson
2011-11-08 13:43 ` Andrew MacLeod
2011-11-11 17:49 ` Benjamin Kosnik
2011-11-11 17:56 ` Andrew MacLeod
2011-11-11 21:07 ` Hans-Peter Nilsson
2011-11-11 23:34 ` Torvald Riegel
2011-11-11 20:27 ` Hans-Peter Nilsson
2011-11-07 16:32 ` Richard Henderson
2011-11-08 20:22 ` Hans-Peter Nilsson
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=201111070038.pA70cqwC023528@ignucius.se.axis.com \
--to=hans-peter.nilsson@axis.com \
--cc=amacleod@redhat.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=libstdc++@gcc.gnu.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).