Prevent assert in ASTMatchFinder.
If nodes without memoization data (e.g. TypeLocs) are bound to specific
names, that effectively prevents memoization as those elements cannot be
compared effectively. If it is tried anyway, this can lead to an assert
as demonstrated in the new test.
In the long term, the better solution will be to enable DynTypedNodes
without memoization data. For now, simply skip memoization instead.
llvm-svn: 213751
diff --git a/clang/lib/ASTMatchers/ASTMatchFinder.cpp b/clang/lib/ASTMatchers/ASTMatchFinder.cpp
index 23708e2..b8ac68a 100644
--- a/clang/lib/ASTMatchers/ASTMatchFinder.cpp
+++ b/clang/lib/ASTMatchers/ASTMatchFinder.cpp
@@ -372,7 +372,7 @@
BoundNodesTreeBuilder *Builder, int MaxDepth,
TraversalKind Traversal, BindKind Bind) {
// For AST-nodes that don't have an identity, we can't memoize.
- if (!Node.getMemoizationData())
+ if (!Node.getMemoizationData() || !Builder->isComparable())
return matchesRecursively(Node, Matcher, Builder, MaxDepth, Traversal,
Bind);