This is a start at making the libc++ test suite friendlier to the -fnoexceptions flag.  Although this is not a complete solution, it does reduce the number of test failures on OS X from 467 to 128 on OS X when -fno-exceptions is enabled, and does not impact the number of failures at all when -fno-exceptions is not enabled.  The bulk of this code was donated anonymously.

llvm-svn: 177824
diff --git a/libcxx/test/containers/test_allocator.h b/libcxx/test/containers/test_allocator.h
index c5da7e6..eed33a0 100644
--- a/libcxx/test/containers/test_allocator.h
+++ b/libcxx/test/containers/test_allocator.h
@@ -48,8 +48,13 @@
     const_pointer address(const_reference x) const {return &x;}
     pointer allocate(size_type n, const void* = 0)
         {
-            if (count >= throw_after)
+            if (count >= throw_after) {
+#ifndef _LIBCPP_NO_EXCEPTIONS
                 throw std::bad_alloc();
+#else
+                std::terminate();
+#endif
+            }
             ++count;
             return (pointer)std::malloc(n * sizeof(T));
         }