[clang] [clang]improve diagnosing redefined defaulted constructor with different exception specs (PR #69688)

[Timm Baeder via cfe-commits]

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@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -fcxx-exceptions -std=c++11 %s
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tbaederr wrote:

There's a typo in the name of this file.

https://github.com/llvm/llvm-project/pull/69688