From af04c9e2c0dfdb2172241883c7b9130e63fec0be Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sat, 27 Apr 2013 17:19:07 +0000
Subject: [PATCH] Import c812a07cd2f95c1403baf0bbe0366e7618d1d6d3 of libcxxrt:

*   Fix a copy-and-paste error when setting the unexpected exception handler
    (actually set the terminate handler by mistake).

*   Fix some warnings.

    Patch by Joerg Sonnenberger!

*   Don't call the _fast version of the TLS accessor in terminate() or unexpected().

    1) TLS may not have been set up yet.
    2) When we're in one of these functions, Really Bad Stuff has happened and potentially saving a few cycles really isn't important.

*   Merge in fixes from FreeBSD trunk to make atomics work with recent clang.
---
 atomic.h     | 8 ++++----
 exception.cc | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/atomic.h b/atomic.h
index bcd8a47ac89..f68faf32582 100644
--- a/atomic.h
+++ b/atomic.h
@@ -9,9 +9,9 @@
  * Swap macro that enforces a happens-before relationship with a corresponding
  * ATOMIC_LOAD.
  */
-#if __has_feature(cxx_atomic)
+#if __has_builtin(__c11_atomic_exchange)
 #define ATOMIC_SWAP(addr, val)\
-	__atomic_exchange(addr, val, __ATOMIC_ACQ_REL)
+	__c11_atomic_exchange((_Atomic(__typeof__(val))*)addr, val, __ATOMIC_ACQ_REL)
 #elif __has_builtin(__sync_swap)
 #define ATOMIC_SWAP(addr, val)\
 	__sync_swap(addr, val)
@@ -20,9 +20,9 @@
 	__sync_lock_test_and_set(addr, val)
 #endif
 
-#if __has_feature(cxx_atomic)
+#if __has_builtin(__c11_atomic_load)
 #define ATOMIC_LOAD(addr)\
-	__atomic_load(addr, __ATOMIC_ACQUIRE)
+	__c11_atomic_load((_Atomic(__typeof__(*addr))*)addr, __ATOMIC_ACQUIRE)
 #else
 #define ATOMIC_LOAD(addr)\
 	(__sync_synchronize(), *addr)
diff --git a/exception.cc b/exception.cc
index 4ccf38eba7a..50ee582ae6f 100644
--- a/exception.cc
+++ b/exception.cc
@@ -1387,7 +1387,7 @@ namespace std
 	{
 		if (thread_local_handlers) { return pathscale::set_unexpected(f); }
 
-		return ATOMIC_SWAP(&terminateHandler, f);
+		return ATOMIC_SWAP(&unexpectedHandler, f);
 	}
 	/**
 	 * Sets the function that is called to terminate the program.
@@ -1404,7 +1404,7 @@ namespace std
 	 */
 	void terminate()
 	{
-		static __cxa_thread_info *info = thread_info_fast();
+		static __cxa_thread_info *info = thread_info();
 		if (0 != info && 0 != info->terminateHandler)
 		{
 			info->terminateHandler();
@@ -1421,7 +1421,7 @@ namespace std
 	 */
 	void unexpected()
 	{
-		static __cxa_thread_info *info = thread_info_fast();
+		static __cxa_thread_info *info = thread_info();
 		if (0 != info && 0 != info->unexpectedHandler)
 		{
 			info->unexpectedHandler();