#14894: Fix PARI error handling (needed for future upgrade to PARI 2.6)
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Reporter: vbraun | Owner: jdemeyer
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.12
Component: packages: standard | Resolution:
Keywords: pari error signal | Merged in:
Authors: Peter Bruin | Reviewers: Jeroen Demeyer
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #12142, #14873 | Stopgaps:
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Comment (by pbruin):
Replying to [comment:42 jdemeyer]:
> Replying to [comment:41 pbruin]:
> > There is the callback function `cb_pari_handle_exception`
> The problem with that callback is that it is called after printing the
error message. For Sage, we don't want the error to be printed.
Couldn't we prevent printing the error message by using a custom `pariErr`
like we already do for `pariOut`? Besides not having to patch PARI to add
another callback, this has the additional advantage that the error text
can be stored for possible inspection.
> My approach would still use a `longjmp()` to jump to the `setjmp()`
inside `sig_on()`. It would avoid an additional `setjmp()` call for PARI.
Good, that is what I suspected.
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Ticket URL: <http://trac.sagemath.org/ticket/14894#comment:43>
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