[xen master] tools/ocaml/libs: Don't declare stubs as taking void

[patchbot@xxxxxxx]

commit ff8b560be80b9211c303d74df7e4b3921d2bb8ca
Author:     Edwin Török <edwin.torok@xxxxxxxxx>
AuthorDate: Thu Jan 12 11:28:29 2023 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Mon Feb 6 10:22:12 2023 +0000

    tools/ocaml/libs: Don't declare stubs as taking void
    
    There is no such thing as an Ocaml function (C stub or otherwise) taking no
    parameters.  In the absence of any other parameters, unit is still passed.
    
    This doesn't explode with any ABI we care about, but would malfunction for 
an
    ABI environment such as stdcall.
    
    Fixes: c3afd398ba7f ("ocaml: Add XS bindings.")
    Fixes: 8b7ce06a2d34 ("ocaml: Add XC bindings.")
    Signed-off-by: Edwin Török <edwin.torok@xxxxxxxxx>
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Christian Lindig <christian.lindig@xxxxxxxxxx>
---
 tools/ocaml/libs/xb/xenbus_stubs.c  | 5 ++---
 tools/ocaml/libs/xc/xenctrl_stubs.c | 4 ++--
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/ocaml/libs/xb/xenbus_stubs.c 
b/tools/ocaml/libs/xb/xenbus_stubs.c
index 3065181a55..97116b0782 100644
--- a/tools/ocaml/libs/xb/xenbus_stubs.c
+++ b/tools/ocaml/libs/xb/xenbus_stubs.c
@@ -30,10 +30,9 @@
 #include <xenctrl.h>
 #include <xen/io/xs_wire.h>
 
-CAMLprim value stub_header_size(void)
+CAMLprim value stub_header_size(value unit)
 {
-       CAMLparam0();
-       CAMLreturn(Val_int(sizeof(struct xsd_sockmsg)));
+       return Val_int(sizeof(struct xsd_sockmsg));
 }
 
 CAMLprim value stub_header_of_string(value s)
diff --git a/tools/ocaml/libs/xc/xenctrl_stubs.c 
b/tools/ocaml/libs/xc/xenctrl_stubs.c
index 2fba9c5e94..7288184459 100644
--- a/tools/ocaml/libs/xc/xenctrl_stubs.c
+++ b/tools/ocaml/libs/xc/xenctrl_stubs.c
@@ -86,9 +86,9 @@ static void Noreturn failwith_xc(xc_interface *xch)
        caml_raise_with_string(*caml_named_value("xc.error"), error_str);
 }
 
-CAMLprim value stub_xc_interface_open(void)
+CAMLprim value stub_xc_interface_open(value unit)
 {
-       CAMLparam0();
+       CAMLparam1(unit);
        CAMLlocal1(result);
        xc_interface *xch;
 
--
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