error: Undefined Behavior: calling a function with more arguments than it expected
  --> $DIR/cast_fn_ptr1.rs:LL:CC
   |
LL |     g(42)
   |     ^^^^^ calling a function with more arguments than it expected
   |
   = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
   = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
   = note: BACKTRACE:
   = note: inside `main` at $DIR/cast_fn_ptr1.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to previous error