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From: William Tambe <tambewilliam@gmail.com>
Date: Sat, 12 Sep 2020 16:04:23 -0500
Message-ID: <CAF8i9mNoT1MvhJCg0LdYh4WxxBGMMVfOjiANAXBWtsFdT7R3Fw@mail.gmail.com>
Subject: Re: Unconditional trap
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On Sat, Sep 12, 2020 at 3:26 PM Marc Glisse <marc.glisse@inria.fr> wrote:
>
> On Sat, 12 Sep 2020, William Tambe via Gcc-help wrote:
>
> > However it causes the compiler to generate a trap when address 0 is
> > used; in the example below, I have a function that prints characters
> > through the UART using address 0; but the resulting assembly generates
> > a function that traps instead.
>
> Are you using -fno-delete-null-pointer-checks?

Using -fno-delete-null-pointer-checks helps.

Is there a way to make it permanent in the GCC source such that
providing that option is not needed ?

>
> --
> Marc Glisse