val _shadow : [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]val eprintf : [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]val exitf : [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]val fprintf : 'a -> [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]val invalid_argf : ('a, unit, string, unit -> 'b) Stdlib.format4 -> 'aval kfprintf : 'a -> 'b -> [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]val ksprintf : (string -> 'a) -> ('b, unit, string, 'a) Stdlib.format4 -> 'bval printf : [> `Probably_should_not_use_blocking_Core_Printf_functions_with_Async ]