[clang] [clang] Improved diagnostics for explicit specialization/instantiation of closure type members (PR #192843)

[via cfe-commits]

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@@ -788,18 +788,21 @@ void GH67492() {
 // FIXME: This currently causes clang to crash in C++11 mode.
 #if __cplusplus >= 201402L
 namespace GH83267 {
-auto l = [](auto a) { return 1; };
+auto l = [](auto a) { return 1; }; // expected-note {{defined here}}
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StefanPaulet wrote:

Done

https://github.com/llvm/llvm-project/pull/192843