diff --git a/clang-tools-extra/clangd/ParsedAST.cpp b/clang-tools-extra/clangd/ParsedAST.cpp
--- a/clang-tools-extra/clangd/ParsedAST.cpp
+++ b/clang-tools-extra/clangd/ParsedAST.cpp
@@ -44,6 +44,7 @@
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Basic/Stack.h"
 #include "clang/Basic/TokenKinds.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/CompilerInvocation.h"
@@ -388,6 +389,7 @@
                  std::unique_ptr<clang::CompilerInvocation> CI,
                  llvm::ArrayRef<Diag> CompilerInvocationDiags,
                  std::shared_ptr<const PreambleData> Preamble) {
+  clang::noteBottomOfStack();
   trace::Span Tracer("BuildAST");
   SPAN_ATTACH(Tracer, "File", Filename);
 
diff --git a/clang-tools-extra/clangd/test/infinite-instantiation.test b/clang-tools-extra/clangd/test/infinite-instantiation.test
new file mode 100644
--- /dev/null
+++ b/clang-tools-extra/clangd/test/infinite-instantiation.test
@@ -0,0 +1,13 @@
+// RUN: cp %s %t.cpp
+// RUN: not clangd -check=%t.cpp 2>&1 | FileCheck -strict-whitespace %s
+
+// CHECK: [template_recursion_depth_exceeded]
+
+template <typename... T>
+constexpr int f(T... args) {
+  return f(0, args...);
+}
+
+int main() {
+  auto i = f();
+}