Re: [Xen-devel] [PATCH v2] tools/ocaml: Fix build error with Arch Linux

[Wei Liu <wl@xxxxxxx>]

On Mon, 28 Oct 2019 at 16:38, Petre Pircalabu
<ppircalabu@xxxxxxxxxxxxxxx> wrote:
>
> gcc (GCC) 9.2.0 complains:
>
> xentoollog_stubs.c: In function ‘stub_xtl_ocaml_vmessage’:
> xentoollog_stubs.c:93:16: error: initialization discards ‘const’ qualifier 
> from pointer target type [-Werror=discarded-qualifiers]
>    93 |  value *func = caml_named_value(xtl->vmessage_cb) ;
>       |                ^~~~~~~~~~~~~~~~
>
> This patch constifies the pointer returned by caml_named_value in order
> to the accommodate newer versions of OCaml.
> In OCaml >= 4.09 the return value pointer of caml_named_value is
> declared const.
>
> https://github.com/ocaml/ocaml/commit/4f03a1467d29cf587df5a191830f1525506ee0e3
>
> Signed-off-by: Petre Pircalabu <ppircalabu@xxxxxxxxxxxxxxx>
> Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> Release-acked-by: Juergen Gross <jgross@xxxxxxxx>

Acked-by: Wei Liu <wl@xxxxxxx>

I will wait a few days for Christian and David to chime in. If I don't
hear back by Monday, I'm going to commit this patch -- this is pretty
mechanical anyway.

Wei.

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