[clang] [clang] Add formal linkage to textual AST dump (PR #194600)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,276 @@
+// RUN: %clang_cc1 -ast-dump %s | FileCheck --match-full-lines %s
+
+namespace std {
+// CHECK: |-NamespaceDecl {{.*}} std external-linkage
+template <typename T>
+struct initializer_list {
+  const T* begin;
+  const T* end;
+};
+} // namespace std
+
+namespace {
+// CHECK: |-NamespaceDecl {{.*}} external-linkage
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AaronBallman wrote:

Add a FIXME for this one, this should not have external linkage.

https://github.com/llvm/llvm-project/pull/194600