http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50678
--- Comment #41 from Iain Sandoe <iains at gcc dot gnu.org> 2011-10-17 22:52:28 UTC --- (In reply to comment #39) I'll try and cook up a radar... (against sigtramp unwind data in Libc taking into account your following comment). I guess we should not expect a fix for Darwin 9 - so the fix will likely be needed in any case. > > It should be possible to produce a test-case w/out Ada (filing a bug that > > requires GCC+Ada is not likely to get far). I wonder why my c++ case > > doesn't > > appear to fail. > > Because %rbx is saved in the prologue of do_fail. hm. Isn't that the correct action? also - _ada_c52104y saves %rbx in its prologue. I thought we were looking for a situation where the saves were OK, but the restores were wrong - and I was expecting the c++ emulation to do roughly the same thing. Perhaps there's a difference in the way it unwinds.
