--- /dev/null
+From f9a35ba5c150da2e381c4cab01f8f12bcd6af5d2 Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 17 Jul 2017 19:41:08 +0000
+Subject: [PATCH] Backported from mainline 2017-07-14 Jakub
+ Jelinek <jakub@redhat.com>
+
+ PR sanitizer/81066
+ * sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+ * sanitizer_common/sanitizer_linux.cc: Likewise.
+ * sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+ * tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@250287 138bc75d-0d04-0410-961f-82ee72b054a4
+(cherry picked from commit 72edc2c02f8b4768ad660f46a1c7e2400c0a8e06)
+[Romain backport to 4.9.4]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 69c9c10..8e53673 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -599,8 +599,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+ return internal_syscall(__NR_prctl, option, arg2, arg3, arg4, arg5);
+ }
+
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+- struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+ return internal_syscall(__NR_sigaltstack, (uptr)ss, (uptr)oss);
+ }
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 6422df1..8e111d1 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -18,7 +18,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+
+ struct link_map; // Opaque type returned by dlopen().
+-struct sigaltstack;
+
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -28,8 +27,7 @@ struct linux_dirent;
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+- struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigaction(int signum, const __sanitizer_kernel_sigaction_t *act,
+ __sanitizer_kernel_sigaction_t *oldact);
+ uptr internal_sigprocmask(int how, __sanitizer_kernel_sigset_t *set,
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index 6ee63ec..50c21a3 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -238,7 +238,7 @@ static int TracerThread(void* argument) {
+
+ // Alternate stack for signal handling.
+ InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+- struct sigaltstack handler_stack;
++ stack_t handler_stack;
+ internal_memset(&handler_stack, 0, sizeof(handler_stack));
+ handler_stack.ss_sp = handler_stack_memory.data();
+ handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index fe69430..49f5270 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -351,7 +351,7 @@ bool IsGlobalVar(uptr addr) {
+ // closes within glibc. The code is a pure hack.
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+ int cnt = 0;
+- __res_state *statp = (__res_state*)state;
++ struct __res_state *statp = (struct __res_state*)state;
+ for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+ if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+ fds[cnt++] = statp->_u._ext.nssocks[i];
+--
+2.9.5
+
--- /dev/null
+From cf796eadff0f2ff0f6e4565373d54d10dff276e1 Mon Sep 17 00:00:00 2001
+From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 7 Sep 2017 07:17:17 +0000
+Subject: [PATCH] 2017-09-07 Matthias Klose <doko@ubuntu.com>
+
+ Backported from mainline
+ 2017-07-14 Jakub Jelinek <jakub@redhat.com>
+
+ PR sanitizer/81066
+ * sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+ * sanitizer_common/sanitizer_linux.cc: Likewise.
+ * sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+ * tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@251829 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit 833e00c01e96f61e24cd7ec97b93fad212dc914b)
+[Romain rebase on gcc 5.4]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 9feb307..821b26d 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -514,8 +514,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+ }
+ #endif
+
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+- struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+ return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
+ }
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 086834c..3a6f4cd 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -18,7 +18,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+
+ struct link_map; // Opaque type returned by dlopen().
+-struct sigaltstack;
+
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -27,8 +26,7 @@ struct linux_dirent;
+
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+- struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
+ __sanitizer_sigset_t *oldset);
+ void internal_sigfillset(__sanitizer_sigset_t *set);
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index 5881202..c54894d 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -234,7 +234,7 @@ static int TracerThread(void* argument) {
+
+ // Alternate stack for signal handling.
+ InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+- struct sigaltstack handler_stack;
++ stack_t handler_stack;
+ internal_memset(&handler_stack, 0, sizeof(handler_stack));
+ handler_stack.ss_sp = handler_stack_memory.data();
+ handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index 3259131..b8e9078 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -377,7 +377,7 @@ bool IsGlobalVar(uptr addr) {
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+ #if SANITIZER_LINUX
+ int cnt = 0;
+- __res_state *statp = (__res_state*)state;
++ struct __res_state *statp = (struct __res_state*)state;
+ for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+ if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+ fds[cnt++] = statp->_u._ext.nssocks[i];
+--
+2.9.5
+
--- /dev/null
+From a3e3d1b5f73380a99126c4937a95225ba3bd214b Mon Sep 17 00:00:00 2001
+From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 7 Sep 2017 07:15:24 +0000
+Subject: [PATCH] 2017-09-07 Matthias Klose <doko@ubuntu.com>
+
+ Backported from mainline
+ 2017-07-14 Jakub Jelinek <jakub@redhat.com>
+
+ PR sanitizer/81066
+ * sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+ * sanitizer_common/sanitizer_linux.cc: Likewise.
+ * sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+ * tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch@251828 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit 8937b94d1a643fd9760714642296d034a45254a8)
+[Romain rebase on gcc 6.4]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 2cefa20..223d9c6 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -546,8 +546,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+ }
+ #endif
+
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+- struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+ return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
+ }
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 4497702..1594058 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -19,7 +19,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+
+ struct link_map; // Opaque type returned by dlopen().
+-struct sigaltstack;
+
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -28,8 +27,7 @@ struct linux_dirent;
+
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+- struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
+ __sanitizer_sigset_t *oldset);
+ void internal_sigfillset(__sanitizer_sigset_t *set);
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index c919e4f..014162af 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -267,7 +267,7 @@ static int TracerThread(void* argument) {
+
+ // Alternate stack for signal handling.
+ InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+- struct sigaltstack handler_stack;
++ stack_t handler_stack;
+ internal_memset(&handler_stack, 0, sizeof(handler_stack));
+ handler_stack.ss_sp = handler_stack_memory.data();
+ handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index 09cec5f..908f4fe 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -291,7 +291,7 @@ bool IsGlobalVar(uptr addr) {
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+ #if SANITIZER_LINUX
+ int cnt = 0;
+- __res_state *statp = (__res_state*)state;
++ struct __res_state *statp = (struct __res_state*)state;
+ for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+ if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+ fds[cnt++] = statp->_u._ext.nssocks[i];
+--
+2.9.5
+