Index: test/functionalities/asan/TestMemoryHistory.py
===================================================================
--- test/functionalities/asan/TestMemoryHistory.py
+++ test/functionalities/asan/TestMemoryHistory.py
@@ -17,6 +17,7 @@
     # self.useBuiltClang() to use clang from the llvm-build directory instead
 
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+    @unittest2.skipIf(sys.platform.startswith("darwin"), "-fsanitize=address isn't supported on Darwin")
     @skipIfRemote
     @dsym_test
     def test_with_dsym (self):
@@ -24,6 +25,7 @@
         self.buildDsym (None, compiler)
         self.asan_tests ()
 
+    @unittest2.skipIf(sys.platform.startswith("darwin"), "-fsanitize=address isn't supported on Darwin")
     @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
     @skipIfRemote
     @expectedFailureLinux # non-core functionality, need to reenable and fix later (DES 2014.11.07)
Index: test/functionalities/asan/TestReportData.py
===================================================================
--- test/functionalities/asan/TestReportData.py
+++ test/functionalities/asan/TestReportData.py
@@ -18,6 +18,7 @@
     # self.useBuiltClang() to use clang from the llvm-build directory instead
 
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+    @unittest2.skipIf(sys.platform.startswith("darwin"), "-fsanitize=address isn't supported on Darwin")
     @skipIfRemote
     @dsym_test
     def test_with_dsym (self):
@@ -25,6 +26,7 @@
         self.buildDsym (None, compiler)
         self.asan_tests ()
 
+    @unittest2.skipIf(sys.platform.startswith("darwin"), "-fsanitize=address isn't supported on Darwin")
     @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
     @skipIfRemote
     @expectedFailureLinux # non-core functionality, need to reenable and fix later (DES 2014.11.07)
Index: test/lldbtest.py
===================================================================
--- test/lldbtest.py
+++ test/lldbtest.py
@@ -1522,6 +1522,11 @@
             path = os.path.join(lldb_root_path, p)
             if os.path.exists(path):
                 return path
+
+        # Tries to find clang at the same folder as the lldb
+        path = os.path.join(os.path.dirname(self.lldbExec), "clang")
+        if os.path.exists(path):
+            return path
         
         return os.environ["CC"]