jeremy bf7b95714d Use a better fix for the copy coroutine fiber implementation
This comes from the Ruby fiber maintainer.  It doesn't require compiling a
couple files without optimization, and it was able to get through a make
test run without crashing on sparc64, which uses the copy coroutine fiber
implementation.

OK kn@
2020-12-08 01:03:31 +00:00
..
2020-10-05 16:33:46 +00:00