c_parse_args(): Box the returned `Config` pointer

Otherwise it gets freed too early by Rust. Add (re-add) a free function
for it too now that we know it must be freed manually.

2 files changed, 9 insertions, 1 deletions

diff --git a/dome_key_map.h b/dome_key_map.h
index 8701b4a..8323fdd 100644
--- a/dome_key_map.h
+++ b/dome_key_map.h
@@ -37,6 +37,8 @@ const Config *c_parse_args(const char *const *args, size_t length);
 
 void c_run_key_action(State *state, Trigger trigger, const Trigger *mode);
 
+void config_free(Config *ptr);
+
 void logger_init(void);
 
 void state_free(State *ptr);
diff --git a/src/cocoa_bridge.rs b/src/cocoa_bridge.rs
index 2ef4979..70d837a 100644
--- a/src/cocoa_bridge.rs
+++ b/src/cocoa_bridge.rs
@@ -322,7 +322,13 @@ pub extern "C" fn c_parse_args(
 
     let config = config::parse_args(&args);
 
-    &config as *const Config
+    Box::into_raw(Box::new(config))
+}
+
+#[no_mangle]
+pub extern "C" fn config_free(ptr: *mut Config) {
+    if ptr.is_null() { return }
+    unsafe { Box::from_raw(ptr); }
 }