Slava Pestov 8e35609df2 IRGen: Sign the class stub initialization callback pointer on arm64e ...

The Objective-C runtime expects a signed pointer here. The existing test
would have caught this, except it was always disabled because the
symbol name passed to the dlsym() check should not have had the leading
'_'.

Fixes <rdar://problem/57679510>.

2020-05-01 21:55:11 -04:00

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