From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rock.gnat.com (rock.gnat.com [205.232.38.15]) by sourceware.org (Postfix) with ESMTPS id 27F6638418BE; Mon, 27 Jun 2022 13:29:33 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 27F6638418BE Received: from localhost (localhost.localdomain [127.0.0.1]) by filtered-rock.gnat.com (Postfix) with ESMTP id DCFCA11645B; Mon, 27 Jun 2022 09:29:32 -0400 (EDT) X-Virus-Scanned: Debian amavisd-new at gnat.com Received: from rock.gnat.com ([127.0.0.1]) by localhost (rock.gnat.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 6jANZgN-1R9X; Mon, 27 Jun 2022 09:29:32 -0400 (EDT) Received: from free.home (tron.gnat.com [IPv6:2620:20:4000:0:46a8:42ff:fe0e:e294]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by rock.gnat.com (Postfix) with ESMTPS id 79BCF116438; Mon, 27 Jun 2022 09:29:32 -0400 (EDT) Received: from livre (livre.home [172.31.160.2]) by free.home (8.15.2/8.15.2) with ESMTPS id 25RDTO2P891164 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Jun 2022 10:29:24 -0300 From: Alexandre Oliva To: Jonathan Wakely Cc: Jonathan Wakely , "libstdc++" , gcc-patches Subject: Re: [PATCH] libstdc++: testsuite: use -lbsd for net_ts on RTEMS Organization: Free thinker, does not speak for AdaCore References: <5e77936e-a80b-9df4-cc29-aa36cb301df6@embedded-brains.de> Errors-To: aoliva@lxoliva.fsfla.org Date: Mon, 27 Jun 2022 10:29:24 -0300 In-Reply-To: (Alexandre Oliva's message of "Thu, 23 Jun 2022 09:39:49 -0300") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 X-Spam-Status: No, score=-12.3 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libstdc++@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++ mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Jun 2022 13:29:35 -0000 On Jun 23, 2022, Alexandre Oliva wrote: > Sorry, I goofed when testing this, and another internal xfail machinery > hid the bug: I had to use dg-xfail-run-if instead. And then, having enabled pipe(), disabled the internal xfail machinery, and added -Wl,--gc-sections after -lbsd as recommended, I found that net/timer/waitable/cons.cc passed; that the other waitable tests failed to link because of poll(), not pipes; and that the resolver tests failed for other reasons. So here's the adjusted patch I'm using now, and that I'll check in shortly. libstdc++: xfail experimental/net tests on rtems Some net/timer/waitable tests fail on rtems because poll() is not available. The above, as well as net/internet/resolver/ops tests and net/timer/waitable/cons.cc, will fail early at runtime unless mkfifo is enabled in the RTEMS configuration, because the io_context ctor throws when pipe() fails. However, even enabling pipes and adjusting the net_ts link command to use --gc-sections for -lbsd as recommended, both net/internet/resolver/ops still fail at runtime. Regstrapped on x86_64-linux-gnu, also tested with a cross to aarch64-rtems6. Ok to install? for libstdc++-v3/ChangeLog * testsuite/lib/dg-options.exp (add_options_for_net_ts): Add -Wl,--gc-sections for RTEMS targets. * testsuite/experimental/net/timer/waitable/dest.cc: Link-time xfail on RTEMS. * testsuite/experimental/net/timer/waitable/ops.cc: Likewise. * testsuite/experimental/net/internet/resolver/ops/lookup.cc: Execution-time xfail on RTEMS. * testsuite/experimental/net/internet/resolver/ops/reverse.cc: Likewise. --- .../net/internet/resolver/ops/lookup.cc | 1 + .../net/internet/resolver/ops/reverse.cc | 1 + .../experimental/net/timer/waitable/dest.cc | 1 + .../experimental/net/timer/waitable/ops.cc | 1 + libstdc++-v3/testsuite/lib/dg-options.exp | 6 +----- 5 files changed, 5 insertions(+), 5 deletions(-) diff --git a/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/lookup.cc b/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/lookup.cc index eb411dea8369c..0ac9cb3513d7e 100644 --- a/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/lookup.cc +++ b/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/lookup.cc @@ -18,6 +18,7 @@ // { dg-do run { target c++14 } } // { dg-require-effective-target net_ts_ip } // { dg-add-options net_ts } +// { dg-xfail-run-if "io_context requires a working pipe" { *-*-rtems* } } #include #include diff --git a/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/reverse.cc b/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/reverse.cc index 361df2676efc8..dfdf855c68cd7 100644 --- a/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/reverse.cc +++ b/libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/reverse.cc @@ -18,6 +18,7 @@ // { dg-do run { target c++14 } } // { dg-require-effective-target net_ts_ip } // { dg-add-options net_ts } +// { dg-xfail-run-if "io_context requires a working pipe" { *-*-rtems* } } #include #include diff --git a/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc b/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc index f571f4a8d861a..384f768c2b56d 100644 --- a/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc +++ b/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc @@ -17,6 +17,7 @@ // { dg-do run { target c++14 } } // { dg-add-options libatomic } +// { dg-xfail-if "poll not available" { *-*-rtems* } } #include #include diff --git a/libstdc++-v3/testsuite/experimental/net/timer/waitable/ops.cc b/libstdc++-v3/testsuite/experimental/net/timer/waitable/ops.cc index 97ab629b893a9..815ad71578035 100644 --- a/libstdc++-v3/testsuite/experimental/net/timer/waitable/ops.cc +++ b/libstdc++-v3/testsuite/experimental/net/timer/waitable/ops.cc @@ -17,6 +17,7 @@ // { dg-do run { target c++14 } } // { dg-add-options libatomic } +// { dg-xfail-if "poll not available" { *-*-rtems* } } #include #include diff --git a/libstdc++-v3/testsuite/lib/dg-options.exp b/libstdc++-v3/testsuite/lib/dg-options.exp index b61c4c0cb8fcd..cc312edc172e4 100644 --- a/libstdc++-v3/testsuite/lib/dg-options.exp +++ b/libstdc++-v3/testsuite/lib/dg-options.exp @@ -281,11 +281,7 @@ proc add_options_for_net_ts { flags } { if { [istarget *-*-solaris2*] } { return "$flags -lsocket -lnsl" } elseif { [istarget *-*-rtems*] } { - # Adding -Wl,--gc-sections would enable a few more tests to - # link, but all of them fail at runtime anyway, because the - # io_context ctor calls pipe(), which always fails, and thus - # the ctor throws a system error. - return "$flags -lbsd" + return "$flags -lbsd -Wl,--gc-sections" } return $flags } -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer Disinformation flourishes because many people care deeply about injustice but very few check the facts. 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