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Re: Unused parameter warnings


From: Bruno Haible
Subject: Re: Unused parameter warnings
Date: Tue, 06 Oct 2020 23:05:58 +0200
User-agent: KMail/5.1.3 (Linux/4.4.0-189-generic; KDE/5.18.0; x86_64; ; )

Marc Nieper-Wißkirchen wrote:
> In file included from lib/gl_linked_list.c:29:
> lib/gl_linked_list.c: In function 'gl_linked_iterator_from_to':
> lib/gl_anylinked_list2.h:938:1: error: function might be candidate for
> attribute 'pure' if it is known to return normally
> [-Werror=suggest-attribute=pure]
>   938 | gl_linked_iterator_from_to (gl_list_t list,
>       | ^~~~~~~~~~~~~~~~~~~~~~~~~~

But no such warning in line 920? Makes no sense to me.

And a function that may invoke abort () does "affect observable state".

Bruno




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