swift

95cf518b - [6.2][cxx-interop] Do not consider function types fragile

[6.2][cxx-interop] Do not consider function types fragile Explanationion: Function pointer types wee always considered fragile in C++ mode, this manifested as a regression when interfacing with glibc. Issues: rdar://159184118 Original PRs: #84040 Risk: Low, this only removes a spurious error for library evolution. Testing: Added a compiler test. Reviewers: @egorzhdan