Mac x86_64: Mach exception support

buildbot/buildbot_standard.py

Index: buildbot/buildbot_standard.py
===================================================================
--- buildbot/buildbot_standard.py	(revision 10857)
+++ buildbot/buildbot_standard.py	(working copy)
@@ -336,15 +336,16 @@
   # http://code.google.com/p/nativeclient/issues/detail?id=2473
   bug2473 = (context['clang'] or context['asan']) and context['mode'] == 'opt'
   if context.Mac() and context['arch'] != 'arm' and not bug2473:
-    # We don't run all tests on x86-64 Mac yet, because not all pass
-    # yet, and because it would slow down the bots too much.  We just
-    # run a small set of tests that have previously been fixed to
-    # pass, in order to prevent regressions.
+    # We don't run all tests on x86-64 Mac yet because it would slow
+    # down the bots too much.  We just run a small set of tests that
+    # have previously been fixed to pass, in order to prevent
+    # regressions.
     # TODO(mseaborn): Remove this when we have bots dedicated to
     # testing x86-64 Mac.
     with Step('minimal x86-64 test', status, halt_on_fail=False):
       SCons(context, parallel=True, platform='x86-64',
-            args=['run_hello_world_test',
+            args=['exception_tests',
+                  'run_hello_world_test',
                   'run_execute_data_test',
                   'run_nacl_signal_test',
                   'run_signal_frame_test',