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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=kolabnow.com header.s=dkim20160331 header.b=lefcnMLf; spf=pass (aspmx1.migadu.com: domain of guix-patches-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-patches-bounces@gnu.org X-Migadu-Spam-Score: 1.08 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=kolabnow.com header.s=dkim20160331 header.b=lefcnMLf; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of guix-patches-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-patches-bounces@gnu.org X-Migadu-Queue-Id: CFB102E564 X-Spam-Score: 1.08 X-Migadu-Scanner: scn1.migadu.com X-TUID: ukgRrEZhkswz GCC 5 has a misaligned access to a vector pointer which causes a build failure when using GCC 8 and later. Backport upstream fix that was applied on the GCC 6 branch. * gnu/packages/gcc.scm (gcc-5)[source]: Apply gcc-5-fix-powerpc64le-build.patch. * gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch: New file. * gnu/local.mk (dist_patch_DATA): Add new file. --- Hi, Even though gcc-5-fix-powerpc64le-build.patch modifies a file which is used by all architectures, it only affects powerpc64le because the code it touches is guarded by: #elif defined(_ARCH_PWR8) && defined(__ALTIVEC__) Also, this problem doesn't affect the master branch because GCC 7.5 is able to build GCC 5. Thanks, Thiago gnu/local.mk | 1 + gnu/packages/gcc.scm | 4 +- .../patches/gcc-5-fix-powerpc64le-build.patch | 64 +++++++++++++++++++ 3 files changed, 68 insertions(+), 1 deletion(-) create mode 100644 gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch diff --git a/gnu/local.mk b/gnu/local.mk index 5e5dd0bad3ec..7562b54d14e4 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1068,6 +1068,7 @@ dist_patch_DATA = \ %D%/packages/patches/gcc-4.9.3-mingw-gthr-default.patch \ %D%/packages/patches/gcc-5-hurd.patch \ %D%/packages/patches/gcc-5.0-libvtv-runpath.patch \ + %D%/packages/patches/gcc-5-fix-powerpc64le-build.patch \ %D%/packages/patches/gcc-5-source-date-epoch-1.patch \ %D%/packages/patches/gcc-5-source-date-epoch-2.patch \ %D%/packages/patches/gcc-6-arm-none-eabi-multilib.patch \ diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm index 79994cc19116..ddc5af3cedf9 100644 --- a/gnu/packages/gcc.scm +++ b/gnu/packages/gcc.scm @@ -490,7 +490,9 @@ Go. It also includes runtime support libraries for these languages.") "gcc-5-source-date-epoch-2.patch" "gcc-6-libsanitizer-mode-size.patch" "gcc-fix-texi2pod.patch" - "gcc-5-hurd.patch")) + "gcc-5-hurd.patch" + ;; See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86162 + "gcc-5-fix-powerpc64le-build.patch")) (modules '((guix build utils))) (snippet gcc-canadian-cross-objdump-snippet))) (inputs diff --git a/gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch b/gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch new file mode 100644 index 000000000000..289d64887539 --- /dev/null +++ b/gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch @@ -0,0 +1,64 @@ +From ee6c0081c03330045b3d4cde8421cd1d3a459609 Mon Sep 17 00:00:00 2001 +From: Martin Liska +Date: Fri, 15 Jun 2018 10:51:28 +0200 +Subject: [PATCH] Partial backport r256656 + +2018-06-15 Martin Liska + + Backport from mainline + 2018-01-10 Kelvin Nilsen + + * lex.c (search_line_fast): Remove illegal coercion of an + unaligned pointer value to vector pointer type and replace with + use of __builtin_vec_vsx_ld () built-in function, which operates + on unaligned pointer values. + +From-SVN: r261621 +--- + +Obtained from: + +https://gcc.gnu.org/git/?p=gcc.git;a=patch;h=ee6c0081c03330045b3d4cde8421cd1d3a459609 + +The libcpp/ChangeLog hunk was modified to apply on top of gcc-5's libcpp/ChangeLog. + + libcpp/ChangeLog | 12 ++++++++++++ + libcpp/lex.c | 2 +- + 2 files changed, 13 insertions(+), 1 deletion(-) + +diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog +index c920a05d438..a63abb04f5e 100644 +--- a/libcpp/ChangeLog ++++ b/libcpp/ChangeLog +@@ -1,3 +1,15 @@ ++2018-06-15 Martin Liska ++ ++ PR bootstrap/86162 ++ ++ Backport from mainline ++ 2018-01-10 Kelvin Nilsen ++ ++ * lex.c (search_line_fast): Remove illegal coercion of an ++ unaligned pointer value to vector pointer type and replace with ++ use of __builtin_vec_vsx_ld () built-in function, which operates ++ on unaligned pointer values. ++ + 2017-10-10 Release Manager + + * GCC 5.5.0 released. +diff --git a/libcpp/lex.c b/libcpp/lex.c +index e5a0397f309..b789686f1c4 100644 +--- a/libcpp/lex.c ++++ b/libcpp/lex.c +@@ -568,7 +568,7 @@ search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED) + { + vc m_nl, m_cr, m_bs, m_qm; + +- data = *((const vc *)s); ++ data = __builtin_vec_vsx_ld (0, s); + s += 16; + + m_nl = (vc) __builtin_vec_cmpeq(data, repl_nl); +-- +2.27.0 +