swift

eb8e984b - [Macros] Private discriminators for outermost-private `MacroExpansionDecl` (#64813)

[Macros] Private discriminators for outermost-private `MacroExpansionDecl` (#64813) Add a private discriminator to the mangling of an outermost-private `MacroExpansionDecl` so that declaration macros in different files won't have colliding macro expansion buffer names. rdar://107462515