Version: 4.2.1
1.1 Error Handling
Exception type raised by failing APR procedures. The status
fields contains the error code returned from APR.
Checks whether the given APR status code represents
success. If it doesn’t, the procedure decodes the status into an
error message, prepends the source information to it and
raises a new exception of type exn:fail:apr.
This procedure is unsafe, since passing arbitrary error codes may result in unspecified behaviour.