This make sure there is no mismatch between the size of the integer value that Int64_val returns, and the size of the guestfs_h pointer. This should fix the warning on 32bit environments (and thus build, when --enable-werror is enabled). --- mllib/visit-c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mllib/visit-c.c b/mllib/visit-c.c index b46dd33..b1c1216 100644 --- a/mllib/visit-c.c +++ b/mllib/visit-c.c @@ -54,7 +54,7 @@ value guestfs_int_mllib_visit (value gv, value dirv, value fv) { CAMLparam3 (gv, dirv, fv); - guestfs_h *g = (guestfs_h *) Int64_val (gv); + guestfs_h *g = (guestfs_h *) (intptr_t) Int64_val (gv); struct visitor_function_wrapper_args args; /* The dir string could move around when we call the * visitor_function, so we have to take a full copy of it.