[clang] Optimize -Wunsafe-buffer-usage. (PR #124554)

[Ilya Biryukov via cfe-commits]

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@@ -186,106 +205,202 @@ class MatchDescendantVisitor : public DynamicRecursiveASTVisitor {
     return DynamicRecursiveASTVisitor::TraverseStmt(Node);
   }
 
+  void set_ast_context(ASTContext &Context) { ActiveASTContext = &Context; }
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ilya-biryukov wrote:

NIT: `setASTContext` and `setHandler`  to follow LLVM naming conventions?

https://github.com/llvm/llvm-project/pull/124554