libxl: ocaml: add some missing CAML macros

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
Acked-by: David Scott <dave.scott@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/ocaml/libs/xl/xenlight_stubs.c b/tools/ocaml/libs/xl/xenlight_stubs.c
index c1a9229bb18ee7dab25f02df15c9c3ef481d7b15..a61c22263bcd6345688cac115c24aebe97decec9 100644 (file)
--- a/tools/ocaml/libs/xl/xenlight_stubs.c
+++ b/tools/ocaml/libs/xl/xenlight_stubs.c
@@ -59,6 +59,7 @@ static value Val_error (libxl_error error_c);
 
 static void failwith_xl(int error, char *fname)
 {
+       CAMLparam0();
        CAMLlocal1(arg);
        static value *exc = NULL;
 
@@ -75,6 +76,7 @@ static void failwith_xl(int error, char *fname)
        Store_field(arg, 1, caml_copy_string(fname));
 
        caml_raise_with_arg(*exc, arg);
+       CAMLreturn0;
 }
 
 CAMLprim value stub_raise_exception(value unit)
@@ -338,7 +340,7 @@ static libxl_defbool Defbool_val(value v)
                bool b = Bool_val(Some_val(v));
                libxl_defbool_set(&db, b);
        }
-       return db;
+       CAMLreturnT(libxl_defbool, db);
 }
 
 static value Val_hwcap(libxl_hwcap *c_val)
@@ -369,10 +371,11 @@ static value Val_string_option(const char *c_val)
 
 static char *String_option_val(value v)
 {
+       CAMLparam1(v);
        char *s = NULL;
        if (v != Val_none)
                s = dup_String_val(Some_val(v));
-       return s;
+       CAMLreturnT(char *, s);
 }
 
 #include "_libxl_types.inc"