[swift-dev] Reflection/typeref_lowering.swift' FAILED (but not on Swift CI)

[Andrew Trick]

Has anyone else seen this failure on darwin building the latest github/master?
commit d78012b03feaa5c946fd7d5254ff9492457f1874 (HEAD -> master, public/master)

******************** TEST 'Swift :: Reflection/typeref_lowering.swift' FAILED ********************
/s/sptr/swift/test/Reflection/typeref_lowering.swift:690:19: error: expected string not found in input
// CHECK-64-NEXT: (struct size=81 alignment=8 stride=88 num_extra_inhabitants=0
                  ^
<stdin>:331:1: note: scanning from here
(struct size=0 alignment=1 stride=0 num_extra_inhabitants=0)
^

For some reason, reflection thinks this struct is empty. I've quadruple checked that my repo is clean and rebuilt a number of times, so I'm curious if anyone else has run into it.

Andy