py: Properly implement deletion of locals and derefs, and detect errors.

Needed to reinstate 2 delete opcodes, to specifically check that a local
is not deleted twice.

1 files changed, 2 insertions, 1 deletions

diff --git a/py/emitpass1.c b/py/emitpass1.c
index d2f7aaa53..608848941 100644
--- a/py/emitpass1.c
+++ b/py/emitpass1.c
@@ -91,7 +91,8 @@ STATIC void emit_pass1_store_id(emit_t *emit, qstr qstr) {
 }
 
 STATIC void emit_pass1_delete_id(emit_t *emit, qstr qstr) {
-    get_id_for_modification(emit->scope, qstr);
+    id_info_t *id = get_id_for_modification(emit->scope, qstr);
+    id->flags |= ID_FLAG_IS_DELETED;
 }
 
 const emit_method_table_t emit_pass1_method_table = {