T5611 is broken in GHCi way
!1221 (closed) seems to have revealed that T5611
fails in the ghci
testsuite way:
--- concurrent/should_run/T5611.run/T5611.stdout.normalised 2019-06-18 14:23:24.913214129 +0000
+++ concurrent/should_run/T5611.run/T5611.run.stdout.normalised 2019-06-18 14:23:24.913214129 +0000
@@ -1,2 +1,3 @@
child: Sleeping
+child: Done waiting
parent: Done throwing exception
Moreover, the test itself appears to be wrong; it's using an unsafe
foreign call whereas the #5611 is concerning safe
calls.