Try marking the arguments as references.

Author: davidblewett

fstwrapper/src/set.rs

@@ -147,8 +147,8 @@ pub extern "C" fn fst_set_make_opbuilder(ptr: *mut Set) -> *mut set::OpBuilder<'
 make_free_fn!(fst_set_opbuilder_free, *mut set::OpBuilder);
 
 #[no_mangle]
-pub extern "C" fn fst_set_make_opstreambuilder(ptr: *mut set::Stream) -> *mut set::OpBuilder<'static> {
-    let stream = ref_from_ptr!(ptr);
+pub extern "C" fn fst_set_make_opstreambuilder(ptr: *mut &set::Stream) -> *mut set::OpBuilder<'static> {
+    let stream = unsafe { *Box::from_raw(ptr) };
     let ob = set::OpBuilder::new().add(stream);
     to_raw_ptr(ob)
 }
@@ -162,8 +162,8 @@ pub extern "C" fn fst_set_opbuilder_push(ptr: *mut set::OpBuilder, set_ptr: *mut
 }
 
 #[no_mangle]
-pub extern "C" fn fst_set_opbuilder_push_stream(ptr: *mut set::OpBuilder, stream_ptr: *mut set::Stream) {
-    let stream = ref_from_ptr!(stream_ptr);
+pub extern "C" fn fst_set_opbuilder_push_stream(ptr: *mut set::OpBuilder, stream_ptr: *mut &set::Stream) {
+    let stream = unsafe { *Box::from_raw(stream_ptr) };
     let ob = mutref_from_ptr!(ptr);
     ob.push(stream);
 }