:: Monad m => _
A special case of
error. It is expected that compilers will
recognize this and insert error messages which are more appropriate to
the context in which
undefined appears.
Calls
perror to indicate that the format string ended early.
Calls
perror to indicate that there is a missing argument in
the argument list.
Calls
perror to indicate that there is a type error or similar
in the given argument.
Used for compiler-generated error message; encoding saves bytes of
string junk.
A special error value. If a property evaluates
discard, it
causes QuickCheck to discard the current test case. This can be useful
if you want to discard the current test case, but are somewhere you
can't use
==>, such as inside a generator.
The default value for this type.
Closure introduced by GHC.Stg.Unarise for unused unboxed sum fields.
See Note [aBSENT_SUM_FIELD_ERROR_ID] in GHC.Core.Make
A special case of
error. It is expected that compilers will
recognize this and insert error messages which are more appropriate to
the context in which
undefined appears.
A value that is never available. Rerun of hang from unamb,
but replicated to avoid mutual dependency.
TODO: Remove when this module is moved into the unamb-test package.
Deprecated: It is highly recommended that you either avoid partial
functions or provide meaningful error messages