py: Make mp_obj_get_type() return a const ptr to mp_obj_type_t.

Most types are in rodata/ROM, and mp_obj_base_t.type is a constant pointer,
so enforce this const-ness throughout the code base.  If a type ever needs
to be modified (eg a user type) then a simple cast can be used.

1 files changed, 1 insertions, 1 deletions

diff --git a/py/nativeglue.h b/py/nativeglue.h
index 021e7a8ec..1b6d9cc7a 100644
--- a/py/nativeglue.h
+++ b/py/nativeglue.h
@@ -146,7 +146,7 @@ typedef struct _mp_fun_table_t {
     NORETURN // Only certain compilers support no-return attributes in function pointer declarations
     #endif
     void (*raise_msg)(const mp_obj_type_t *exc_type, const char *msg);
-    mp_obj_type_t *(*obj_get_type)(mp_const_obj_t o_in);
+    const mp_obj_type_t *(*obj_get_type)(mp_const_obj_t o_in);
     mp_obj_t (*obj_new_str)(const char* data, size_t len);
     mp_obj_t (*obj_new_bytes)(const byte* data, size_t len);
     mp_obj_t (*obj_new_bytearray_by_ref)(size_t n, void *items);