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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Tue, 23 Feb 2021 07:47:17 +0000
Message-ID: <CAH6eHdRxCm+TK1wi3DTTsEXdzUC8FVVfsN5Tb+y4+-+AwnYgDQ@mail.gmail.com>
Subject: Re: using undeclared function returning bool results in wrong return
 value
To: Martin Sebor <msebor@gmail.com>
Cc: David Malcolm <dmalcolm@redhat.com>, David Brown <david@westcontrol.com>, 
 Florian Weimer <fweimer@redhat.com>,
 Jonathan Wakely via Gcc <gcc@gcc.gnu.org>, 
 Thanos Makatos <thanos.makatos@nutanix.com>
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On Tue, 23 Feb 2021, 01:02 Martin Sebor, <msebor@gmail.com> wrote:

>
> So I wonder if changing configure to either implicitly use a command
> line option for its tests or set an environment variable to request
> a permissive mode might be a way out.
>


Having a different set of rules for configure scripts is bound to fail at
some point. The obvious example is a configure check to see if functions
with implicit prototypes can be called. That would work in permissive mode,
but fail when trying to run the compiler later.


>
>