commit: 604495b43aa4a5b7aed2044b84ca0d88e600d1df Author: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> AuthorDate: Sun Sep 10 09:45:39 2017 +0000 Commit: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> CommitDate: Sun Sep 10 10:12:18 2017 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=604495b4
glibc: disable stack protector on ARCH=ppc Currently gcc on powerpc32 generates invalid code for __builtin_return_address(0) calls. Normally programs don't do that but malloc() hooks in glibc do: Bug: https://gcc.gnu.org/PR81996 Bug: https://bugs.gentoo.org/629054 Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org> eclass/toolchain-glibc.eclass | 14 +++++++++++++- sys-libs/glibc/glibc-2.26-r1.ebuild | 14 +++++++++++++- 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/eclass/toolchain-glibc.eclass b/eclass/toolchain-glibc.eclass index 33f27ccf46e..98e394659cf 100644 --- a/eclass/toolchain-glibc.eclass +++ b/eclass/toolchain-glibc.eclass @@ -795,7 +795,19 @@ glibc_do_configure() { fi if version_is_at_least 2.25 ; then - myconf+=( --enable-stack-protector=all ) + case ${CTARGET} in + powerpc-*) + # Currently gcc on powerpc32 generates invalid code for + # __builtin_return_address(0) calls. Normally programs + # don't do that but malloc hooks in glibc do: + # https://gcc.gnu.org/PR81996 + # https://bugs.gentoo.org/629054 + myconf+=( --enable-stack-protector=no ) + ;; + *) + myconf+=( --enable-stack-protector=all ) + ;; + esac fi if version_is_at_least 2.25 ; then diff --git a/sys-libs/glibc/glibc-2.26-r1.ebuild b/sys-libs/glibc/glibc-2.26-r1.ebuild index fbe7444f948..b852aba96bc 100644 --- a/sys-libs/glibc/glibc-2.26-r1.ebuild +++ b/sys-libs/glibc/glibc-2.26-r1.ebuild @@ -315,7 +315,19 @@ glibc_do_configure() { [[ -d ports ]] && addons+=",ports" popd > /dev/null - myconf+=( --enable-stack-protector=all ) + case ${CTARGET} in + powerpc-*) + # Currently gcc on powerpc32 generates invalid code for + # __builtin_return_address(0) calls. Normally programs + # don't do that but malloc hooks in glibc do: + # https://gcc.gnu.org/PR81996 + # https://bugs.gentoo.org/629054 + myconf+=( --enable-stack-protector=no ) + ;; + *) + myconf+=( --enable-stack-protector=all ) + ;; + esac myconf+=( --enable-stackguard-randomization ) [[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp )
