The following *-unwind ABIs are now supported: - "C-unwind" - "cdecl-unwind" - "stdcall-unwind" - "fastcall-unwind" - "vectorcall-unwind" - "thiscall-unwind" - "aapcs-unwind" - "win64-unwind" - "sysv64-unwind" - "system-unwind"
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.