Attempt to suppress test failures on OS X

llvm-svn: 296955

1 files changed, 12 insertions, 0 deletions

diff --git a/libcxxabi/test/test_exception_address_alignment.pass.cpp b/libcxxabi/test/test_exception_address_alignment.pass.cpp
index 5c5b4dfe7cc..8e629441b4a 100644
--- a/libcxxabi/test/test_exception_address_alignment.pass.cpp
+++ b/libcxxabi/test/test_exception_address_alignment.pass.cpp
@@ -7,13 +7,25 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03
+
+// The system unwind.h on OS X provides an incorrectly aligned _Unwind_Exception
+// type. That causes these tests to fail. This XFAIL is my best attempt at
+// working around this failure.
+// XFAIL: darwin && libcxxabi-has-system-unwinder
+
 // Test that the address of the exception object is properly aligned to the
 // largest supported alignment for the system.
 
 #include <cstdint>
 #include <cassert>
 
+#include <unwind.h>
+
 struct __attribute__((aligned)) AlignedType {};
+static_assert(alignof(AlignedType) == alignof(_Unwind_Exception),
+  "_Unwind_Exception is incorrectly aligned. This test is expected to fail");
+
 struct MinAligned {  };
 static_assert(alignof(MinAligned) == 1 && sizeof(MinAligned) == 1, "");