Module impossible

Functions which don’t seem possible to even call from Rust with current language features, even with unsafe.

Functions

• longjmp
  See the module comment.
• setjmp
  See the module comment.
• siglongjmp
  See the module comment.
• sigreturn
  See the module comment.
• sigsetjmp
  See the module comment.
• vfork
  See the module comment.