llvm-project

2579b411 - [clang-cl] [AST] Fix MS 1920+ placeholder return type mangling for lambdas (#105999)

[clang-cl] [AST] Fix MS 1920+ placeholder return type mangling for lambdas (#105999) Fixes https://github.com/llvm/llvm-project/pull/104722. Missed handling `decltype(auto)` trailing return types for lambdas. This was a mistake and regression on my part with my PR, https://github.com/llvm/llvm-project/pull/104722. Added some missing unit tests to test for the various placeholder trailing return types in lambdas.