Pass -fwrapv to stricter GCC 4.9
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From a8d0bb2102bc09bfdc7e661fb159d9257474f168 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
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Date: Thu, 10 Apr 2014 16:16:31 +0200
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Subject: [PATCH] Pass -fwrapv to stricter GCC 4.9
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This is port to 5.18.2 of the two upstream patches:
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commit 869747506fd0081f6c7eed149ec6f7adbcc4d5b1
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Author: H.Merijn Brand <h.m.brand@xs4all.nl>
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Date: Wed Apr 9 11:16:55 2014 +0200
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gcc 4.9 by default does some optimizations that break perl (#121505)
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Patch by Tony Cook
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commit 00051dd553979bd2a1dee100c324b59ee76a49e7
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Author: H.Merijn Brand <h.m.brand@xs4all.nl>
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Date: Wed Apr 9 12:31:23 2014 +0200
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-fwrapv is broken prior to gcc-4.3 (googled and patched by Zefram)
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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Configure | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/Configure b/Configure
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index 37b49c8..47e7b8f 100755
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--- a/Configure
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+++ b/Configure
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@@ -4520,6 +4520,22 @@ case "$gccversion" in
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$rm -f try try.*
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esac
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+# gcc 4.9 by default does some optimizations that break perl.
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+# see ticket 121505.
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+#
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+# The -fwrapv disables those optimizations (and probably others,) so
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+# for gcc 4.9 (and later, since the optimizations probably won't go
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+# away), add -fwrapv unless the user requests -fno-wrapv, which
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+# disables -fwrapv, or if the user requests -fsanitize=undefined,
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+# which turns the overflows -fwrapv ignores into runtime errors.
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+case "$gccversion" in
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+4.[3-9].*|4.[1-9][0-9]*|[5-9].*|[1-9][0-9]*)
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+ case "$ccflags" in
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+ *-fno-wrapv*|*-fsanitize=undefined*|*-fwrapv*) ;;
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+ *) ccflags="$ccflags -fwrapv" ;;
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+ esac
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+esac
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+
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: What should the include directory be ?
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echo " "
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$echo $n "Hmm... $c"
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--
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1.9.0
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11
perl.spec
11
perl.spec
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@ -30,7 +30,7 @@
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Name: perl
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Name: perl
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Version: %{perl_version}
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Version: %{perl_version}
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# release number must be even higher, because dual-lived modules will be broken otherwise
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# release number must be even higher, because dual-lived modules will be broken otherwise
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Release: 297%{?dist}
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Release: 298%{?dist}
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Epoch: %{perl_epoch}
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Epoch: %{perl_epoch}
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Summary: Practical Extraction and Report Language
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Summary: Practical Extraction and Report Language
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Group: Development/Languages
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Group: Development/Languages
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@ -122,6 +122,10 @@ Patch22: perl-5.18.1-Document-Math-BigInt-CalcEmu-requires-Math-BigInt.pa
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# in upstream after 5.19.1
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# in upstream after 5.19.1
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Patch23: perl-5.18.2-Make-t-comp-parser.t-get-the-correct-libraries.patch
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Patch23: perl-5.18.2-Make-t-comp-parser.t-get-the-correct-libraries.patch
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# Pass -fwrapv to stricter GCC 4.9, bug #1082957, RT#121505,
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# in upstream after 5.19.10
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Patch24: perl-5.18.2-Pass-fwrapv-to-stricter-GCC-4.9.patch
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# Link XS modules to libperl.so with EU::CBuilder on Linux, bug #960048
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# Link XS modules to libperl.so with EU::CBuilder on Linux, bug #960048
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Patch200: perl-5.16.3-Link-XS-modules-to-libperl.so-with-EU-CBuilder-on-Li.patch
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Patch200: perl-5.16.3-Link-XS-modules-to-libperl.so-with-EU-CBuilder-on-Li.patch
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@ -1909,6 +1913,7 @@ tarball from perl.org.
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%patch21 -p1
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%patch21 -p1
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%patch22 -p1
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%patch22 -p1
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%patch23 -p1
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%patch23 -p1
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%patch24 -p1
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%patch200 -p1
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%patch200 -p1
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%patch201 -p1
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%patch201 -p1
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@ -1936,6 +1941,7 @@ perl -x patchlevel.h \
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'Fedora Patch21: Fix using regular expressions containing multiple code blocks (RT#117917)' \
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'Fedora Patch21: Fix using regular expressions containing multiple code blocks (RT#117917)' \
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'Fedora Patch22: Document Math::BigInt::CalcEmu requires Math::BigInt (CPAN RT#85015)' \
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'Fedora Patch22: Document Math::BigInt::CalcEmu requires Math::BigInt (CPAN RT#85015)' \
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'Fedora Patch23: Fix t/comp/parser.t not to load system modules (RT#121579)' \
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'Fedora Patch23: Fix t/comp/parser.t not to load system modules (RT#121579)' \
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'Fedora Patch24: Pass -fwrapv to stricter GCC 4.9 (RT#121505)' \
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'Fedora Patch200: Link XS modules to libperl.so with EU::CBuilder on Linux' \
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'Fedora Patch200: Link XS modules to libperl.so with EU::CBuilder on Linux' \
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'Fedora Patch201: Link XS modules to libperl.so with EU::MM on Linux' \
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'Fedora Patch201: Link XS modules to libperl.so with EU::MM on Linux' \
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%{nil}
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%{nil}
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@ -3610,6 +3616,9 @@ sed \
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# Old changelog entries are preserved in CVS.
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# Old changelog entries are preserved in CVS.
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%changelog
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%changelog
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* Thu Apr 10 2014 Petr Pisar <ppisar@redhat.com> - 4:5.18.2-298
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- Pass -fwrapv to stricter GCC 4.9 (bug #1082957)
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* Fri Apr 04 2014 Petr Pisar <ppisar@redhat.com> - 4:5.18.2-297
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* Fri Apr 04 2014 Petr Pisar <ppisar@redhat.com> - 4:5.18.2-297
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- Fix t/comp/parser.t not to load system modules (bug #1084399)
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- Fix t/comp/parser.t not to load system modules (bug #1084399)
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