*** WARNING: . is writable by someone else, IGNORING!
*** WARNING: ./.ghci is writable by someone else, IGNORING!
Prelude> :unset +s +t
-Prelude> :s -fglasgow-exts
+Prelude> :set -fglasgow-exts
Prelude> -- test for contexts on existential types crashing the interpreter
Prelude> :l ghci006
Ok, modules loaded: Ghci006.