avoid downsizing casts

It's always safe to cast a 32-bit value to a 64-bit value, but
compilers can warn going the other way (because VALUE is a pointer).

Tested with `ruby -v`
ruby 2.2.0dev (2014-01-19 trunk 44646) [x86_64-linux]
which enables -Wpointer-to-int-cast

2 files changed, 5 insertions, 5 deletions

diff --git a/ext/kgio/poll.c b/ext/kgio/poll.c
index 15774d8..ae8d235 100644
--- a/ext/kgio/poll.c
+++ b/ext/kgio/poll.c
@@ -139,13 +139,13 @@ static VALUE poll_result(int nr, struct poll_args *a)
 static VALUE do_poll(VALUE args)
 {
         struct poll_args *a = (struct poll_args *)args;
-        int nr;
+        long nr;
 
         Check_Type(a->ios, T_HASH);
 
 retry:
         hash2pollfds(a);
-        nr = (int)rb_thread_blocking_region(nogvl_poll, a, RUBY_UBF_IO, NULL);
+        nr = (long)rb_thread_blocking_region(nogvl_poll, a, RUBY_UBF_IO, NULL);
         if (nr < 0) {
                 if (interrupted()) {
                         if (retryable(a)) {
diff --git a/ext/kgio/tryopen.c b/ext/kgio/tryopen.c
index 1d8fffd..5889294 100644
--- a/ext/kgio/tryopen.c
+++ b/ext/kgio/tryopen.c
@@ -81,7 +81,7 @@ static VALUE my_thread_blocking_region(
  */
 static VALUE s_tryopen(int argc, VALUE *argv, VALUE klass)
 {
-        int fd;
+        long fd;
         VALUE pathname, flags, mode;
         struct open_args o;
         int retried = 0;
@@ -106,7 +106,7 @@ static VALUE s_tryopen(int argc, VALUE *argv, VALUE klass)
         }
 
 retry:
-        fd = (int)rb_thread_blocking_region(nogvl_open, &o, RUBY_UBF_IO, 0);
+        fd = (long)rb_thread_blocking_region(nogvl_open, &o, RUBY_UBF_IO, 0);
         if (fd < 0) {
                 if (errno == EMFILE || errno == ENFILE || errno == ENOMEM) {
                         rb_gc();
@@ -125,7 +125,7 @@ retry:
                         return rv;
                 }
         }
-        rv = rb_funcall(klass, id_for_fd, 1, INT2FIX(fd));
+        rv = rb_funcall(klass, id_for_fd, 1, LONG2FIX(fd));
         set_file_path(rv, pathname);
         return rv;
 }