py: Add basic framework for issuing compile/runtime warnings.
diff --git a/py/builtinimport.c b/py/builtinimport.c
index a8f6a81..fd804ee 100644
--- a/py/builtinimport.c
+++ b/py/builtinimport.c
@@ -323,7 +323,7 @@
vstr_add_str(&path, "__init__.py");
if (mp_import_stat(vstr_str(&path)) != MP_IMPORT_STAT_FILE) {
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
- printf("Notice: %s is imported as namespace package\n", vstr_str(&path));
+ mp_warning("%s is imported as namespace package", vstr_str(&path));
} else {
do_load(module_obj, &path);
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py