Saleem Abdulrasool 837e331f16 IRGen: handle ASAN better with importing on ELF ...

ELF's lack of linker directives is worked around by a custom section
(`.swift1_autolink_entries`).  This is metadata that is not intended to
be emitted into the linked binary.  A previous change introduced the use
of a module (global) assembly gadget to discard the section.  However,
this interacts poorly with ASAN which would instrument the section,
resulting in a strong reference.  This reference would persist to a
discarded symbol.  lld would object to this.  Blacklist the symbol to
ensure that ASAN + autolinking can co-exist.

2020-01-09 21:48:25 -08:00

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