Hi Sandra,
The part of the patch to add tests for this goes on top of my base TS29113 testsuite patch, which hasn't been reviewed or committed yet.
It is my understanding that it is not gcc policy to add xfailed test cases for things that do not yet work. Rather, xfail is for tests that later turn out not to work, especially on certain architectures. I have added Toon in CC, maybe he can explain a bit more on that. Regards Thomas