concat: domain error in concat: vector = []

Max Alekseyev on Sat, 15 Sep 2018 23:56:35 +0200

concat: domain error in concat: vector = []

To: pari-users@pari.math.u-bordeaux.fr
Subject: concat: domain error in concat: vector = []
From: Max Alekseyev <maxale@gmail.com>
Date: Sat, 15 Sep 2018 17:55:52 -0400
Delivery-date: Sat, 15 Sep 2018 23:56:35 +0200
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Hello,

Since concat(x) accepts x being a list/vector of objects to be concatenated, it is expected that concat([]) returns []. However:

? concat([])

*** at top-level: concat([])

*** ^----------

*** concat: domain error in concat: vector = []

*** Break loop: type 'break' to go back to GP prompt

What's wrong?

Regards,

Max

Follow-Ups:
- Re: concat: domain error in concat: vector = []
  - From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Re: concat: domain error in concat: vector = []
  - From: Karim Belabas <Karim.Belabas@math.u-bordeaux.fr>