--- /dev/null
+From 33184bf69813087bf1885b0993685f9d03320c69 Mon Sep 17 00:00:00 2001
+From: Dmitri Smirnov <dmitrism@microsoft.com>
+Date: Mon, 29 Feb 2016 14:30:19 -0800
+Subject: [PATCH] Fix stack corruption and uninitialized var warning
+
+Stack corruption happens in x64 bit
+
+This resolves #347.
+---
+ src/arena.c | 2 +-
+ test/unit/hash.c | 13 +++++++------
+ 2 files changed, 8 insertions(+), 7 deletions(-)
+
+diff --git a/src/arena.c b/src/arena.c
+index 99e20fd..965c0fe 100644
+--- a/src/arena.c
++++ b/src/arena.c
+@@ -2423,7 +2423,7 @@ arena_malloc_large(tsd_t *tsd, arena_t *arena, szind_t binind, bool zero)
+ uintptr_t random_offset;
+ arena_run_t *run;
+ arena_chunk_map_misc_t *miscelm;
+- UNUSED bool idump;
++ UNUSED bool idump JEMALLOC_CC_SILENCE_INIT(false);
+
+ /* Large allocation. */
+ usize = index2size(binind);
+diff --git a/test/unit/hash.c b/test/unit/hash.c
+index f50ba81..010c9d7 100644
+--- a/test/unit/hash.c
++++ b/test/unit/hash.c
+@@ -64,14 +64,15 @@ static void
+ hash_variant_verify_key(hash_variant_t variant, uint8_t *key)
+ {
+ const int hashbytes = hash_variant_bits(variant) / 8;
+- VARIABLE_ARRAY(uint8_t, hashes, hashbytes * 256);
++ const int hashes_size = hashbytes * 256;
++ VARIABLE_ARRAY(uint8_t, hashes, hashes_size);
+ VARIABLE_ARRAY(uint8_t, final, hashbytes);
+ unsigned i;
+ uint32_t computed, expected;
+
+ memset(key, 0, KEY_SIZE);
+- memset(hashes, 0, sizeof(hashes));
+- memset(final, 0, sizeof(final));
++ memset(hashes, 0, hashes_size);
++ memset(final, 0, hashbytes);
+
+ /*
+ * Hash keys of the form {0}, {0,1}, {0,1,2}, ..., {0,1,...,255} as the
+@@ -102,17 +103,17 @@ hash_variant_verify_key(hash_variant_t variant, uint8_t *key)
+ /* Hash the result array. */
+ switch (variant) {
+ case hash_variant_x86_32: {
+- uint32_t out = hash_x86_32(hashes, hashbytes*256, 0);
++ uint32_t out = hash_x86_32(hashes, hashes_size, 0);
+ memcpy(final, &out, sizeof(out));
+ break;
+ } case hash_variant_x86_128: {
+ uint64_t out[2];
+- hash_x86_128(hashes, hashbytes*256, 0, out);
++ hash_x86_128(hashes, hashes_size, 0, out);
+ memcpy(final, out, sizeof(out));
+ break;
+ } case hash_variant_x64_128: {
+ uint64_t out[2];
+- hash_x64_128(hashes, hashbytes*256, 0, out);
++ hash_x64_128(hashes, hashes_size, 0, out);
+ memcpy(final, out, sizeof(out));
+ break;
+ } default: not_reached();
--- /dev/null
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+
+inherit toolchain-funcs multilib-build
+
+DESCRIPTION="Jemalloc is a general-purpose scalable concurrent allocator"
+HOMEPAGE="http://www.canonware.com/jemalloc/"
+SRC_URI="http://www.canonware.com/download/${PN}/${P}.tar.bz2"
+
+LICENSE="BSD"
+SLOT="0/2"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~s390 ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+IUSE="debug static-libs stats"
+HTML_DOCS=( doc/jemalloc.html )
+PATCHES=( "${FILESDIR}/${PN}-3.5.1-strip-optimization.patch"
+ "${FILESDIR}/${PN}-3.5.1_fix_html_install.patch"
+ "${FILESDIR}/${PN}-4.1-fix_stack_corruption.patch"
+)
+MULTILIB_WRAPPED_HEADERS=( /usr/include/jemalloc/jemalloc.h )
+# autotools-utils.eclass auto-adds configure options when static-libs is in IUSE
+# but jemalloc doesn't implement them in its configure; need this here to
+# supress the warnings until automagic is removed from the eclass
+QA_CONFIGURE_OPTIONS="--enable-static --disable-static --enable-shared --disable-shared"
+
+multilib_src_configure() {
+ ECONF_SOURCE="${S}" econf \
+ $(use_enable debug)
+ $(use_enable stats)
+}
+
+multilib_src_install() {
+ # Copy man file which the Makefile looks for
+ cp "${S}/doc/jemalloc.3" "${BUILD_DIR}/doc" || die
+ emake DESTDIR="${D}" install
+}
+
+multilib_src_install_all() {
+ if [[ ${CHOST} == *-darwin* ]] ; then
+ # fixup install_name, #437362
+ install_name_tool \
+ -id "${EPREFIX}"/usr/$(get_libdir)/libjemalloc.1.dylib \
+ "${ED}"/usr/$(get_libdir)/libjemalloc.1.dylib || die
+ fi
+ use static-libs || find "${ED}" -name '*.a' -delete
+}