[clang] [clang] Preserve ext_vector_type locations during template substitution (PR #229328)

[Yanzuo Liu via cfe-commits]

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@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
+// RUN: not %clang_cc1 -std=c++11 -fsyntax-only -fno-caret-diagnostics %s 2>&1 | FileCheck %s
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zwuis wrote:

Is it necessary?

https://github.com/llvm/llvm-project/pull/229328