Reorganize board busses into shared-bindings and shared-module.

1 files changed, 4 insertions, 0 deletions

diff --git a/py/gc.h b/py/gc.h
index c05e006b4..757a2a6e0 100644
--- a/py/gc.h
+++ b/py/gc.h
@@ -57,6 +57,10 @@ bool gc_has_finaliser(const void *ptr);
 void *gc_make_long_lived(void *old_ptr);
 void *gc_realloc(void *ptr, size_t n_bytes, bool allow_move);
 
+// Prevents a pointer from ever being freed because it establishes a permanent reference to it. Use
+// very sparingly because it can leak memory.
+bool gc_never_free(void *ptr);
+
 typedef struct _gc_info_t {
     size_t total;
     size_t used;