On Fri, May 16, 2014 at 9:51 AM, Jan Hubicka <hubi...@ucw.cz> wrote: >> >> I have been chasing a runtime failure of a very large test built with >> gcc-4_9. The bad code either calls a pure function or turn a virtual >> call into __builtin_unreachable (incomplete target set). The indirect >> info shows the otr type to be !maybe_derived_type, and the outer-type >> gets cleared during inline update. I isolated a small test case -- but >> the good news is that gcc-4_9 @head already fixed the problem. >> >> I will check in the test case to trunk later. > > Good, testcase would be welcome. I guess it was the fix for placement_new > bug. > It disables some valid devirtualizations (and I thus may revisit the fix for > 4.10), so it would be good to know if your testcase differs from the original > PR one.
I thought so too -- but when I backed out this single change from trunk, the test still passes, so something else is also going on. David > > Honza >> >> thanks, >> >> David >> >> > >> > >> > Honza
