[clang] [Clang] Correctly determine constexprness of dependent lambdas. (PR #124468)

[via cfe-commits]

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@@ -991,6 +991,7 @@ Bug Fixes to C++ Support
 - Fixed assertions or false compiler diagnostics in the case of C++ modules for
   lambda functions or inline friend functions defined inside templates (#GH122493).
 - Clang now rejects declaring an alias template with the same name as its template parameter. (#GH123423)
+- Correctly determine the implicit constexprness of dependent lambdas. (#GH97958) (#GH114234)
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Sirraide wrote:

```suggestion
- Correctly determine the implicit constexprness of lambdas in dependent contexts. (#GH97958) (#GH114234)
```
Maybe this is a bit clearer because strictly speaking this is about cases where the lambda itself *isn’t* dependent.

https://github.com/llvm/llvm-project/pull/124468