Slava Pestov 0bc802e7ad SourceKit: Fix indexing crash with protocol typealiases ...

The root cause is that NormalProtocolConformance::forEachValueWitness()
needs to skip protocol members that are not requirements.

Otherwise we end up passing such a non-requirement member down to
NormalProtocolConformance::getWitness() and hit an assert when we
cannot find it.

It looks like this code path was only ever hit from SourceKit.
The fix moves TypeChecker::isRequirement() to a method on ValueDecl,
and calls it in the right places.

Fixes <https://bugs.swift.org/browse/SR-3815>.

2017-02-20 03:35:19 -08:00

5.5 KiB

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