[Bug bootstrap/63827] parallel make in libjava broken at r217383

[howarth at bromo dot med.uc.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63827

--- Comment #6 from howarth at bromo dot med.uc.edu ---
(In reply to Manuel López-Ibáñez from comment #4)
> I haven't tried to reproduce this yet, but I don't see how that patch could
> lead to this. What is actually the error that triggers that failure in make?

The only "trigger" I see is r217383 and 'make -j 16 bootstrap'. I have been
building darwin bootstraps about 10 times a day for the past week and this
failure never appeared prior to r217383. I do have GNU make 4.1 installed on
this machine. I'll remove that in favor of the darwin system GNU make 3.81 and
see if that suppresses the failure.