Douglas Gregor a9d8493310 Objective-C doesn't consider the use of incomplete types as method ...

parameter types to be ill-formed. However, it relies on the
completeness of method parameter types when producing metadata, e.g.,
for a protocol, leading IR generating to crash in such cases.

Since there's no real way to tighten down the semantics of Objective-C
here without breaking existing code, do something safe but lame:
suppress the generation of metadata when this happens.

Fixes <rdar://problem/9123036>.

llvm-svn: 132171

2011-05-27 01:19:52 +00:00

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