Tests that a dead use of a variable at the tail of a basic block doesn't confuse the CFA into believing that the variable being used is dead as well.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS foo(false, true, 5) is 42 on all iterations including after DFG tier-up.
PASS successfullyParsed is true

TEST COMPLETE