[m-rev.] for review: Disable non-local gotos on AArch64 with GCC 9+.

[Julien Fischer]

Hi Peter,

On Wed, 1 Jun 2022, Peter Wang wrote:

> Programs using non-local gotos on AArch64 crash when compiled with
> newer versions of GCC:
>
>    gcc 6.3.0 (Debian 9) - ok
>    gcc 8.3.0 (Debian 10) - ok
>    gcc 9.3.0 (Debian 11) - crash
>    gcc 10.2 (Debian 11) - crash
>
> Specifically, the programs only crash when compiled with PIC,
> but PIC is commonly the default now.
>
> This is Mantis bug #560.
>
> configure.ac:
>    Disable non-local gotos on AArch64 when using GCC 9+.
>
> README.Linux-aarch64:
>    Mention the problem.

That's fine.

Julien.