[tarantool-patches] Re: [PATCH v2 3/3] box: introduce stacked diagnostic area

[Alexander Turenko]

> > + * Remove all errors set in a given diagnostics area after a
> > + * given savepoint.
> > + *
> > + * Operation removes reason for the error
> > + * preceding the savepoint and releases a diagnostic area's
> > + * reference on the most recent error (diag::last for the
> > + * rollback beginning). This means that if user code have a
> > + * pointer and have a reference to an error object from the
> > + * rollback zone, this pointer and the following "reason" error
> > + * objects are a valid error list.
> > + */
> 
> BTW, did you check if anyone likes the name 'reason'? I'm not very
> fond of it, previous error is not always the reason of the current
> one. I would simply call it 'prev' or 'next'.

Can you give an example of the error that definitely should be previous
for another one, but is not its reason?

It is so for warnings, but this is possibly because they just should not
be mixed with errors within one stack.

WBR, Alexander Turenko.