Give the RecursiveASTVisitor a configuration function
shouldWalkTypesOfTypeLocs() that determines whether it should walk the
Types within TypeLocs. This walk is redundant, but perhaps required
for some clients. Disabling this redundant walk in the unexpanded
parameter pack finder produces better results, because we get
parameter packs with source location info *unless* such source
location information isn't available.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122287 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateVariadic.cpp b/lib/Sema/SemaTemplateVariadic.cpp
index e71c233..681bc8d 100644
--- a/lib/Sema/SemaTemplateVariadic.cpp
+++ b/lib/Sema/SemaTemplateVariadic.cpp
@@ -38,6 +38,8 @@
llvm::SmallVectorImpl<UnexpandedParameterPack> &Unexpanded)
: Unexpanded(Unexpanded) { }
+ bool shouldWalkTypesOfTypeLocs() const { return false; }
+
//------------------------------------------------------------------------
// Recording occurrences of (unexpanded) parameter packs.
//------------------------------------------------------------------------