src/interpreter/vmx.c

@@ -3,7 +3,7 @@
 
 void pk_print_stack(VM* self, py_Frame* frame, Bytecode byte) {
     return;
-    if(frame == NULL || !self->main || py_isnil(self->main)) return;
+    if(frame == NULL || py_isnil(self->main)) return;
 
     py_TValue* sp = self->stack.sp;
     c11_sbuf buf;

src/public/values.c

@@ -47,10 +47,7 @@ void py_newellipsis(py_OutRef out) {
     out->is_ptr = false;
 }
 
-void py_newnil(py_OutRef out) {
+void py_newnil(py_OutRef out) { out->type = 0; }
-    out->type = tp_nil;
-    out->is_ptr = false;
-}
 
 void py_newnativefunc(py_OutRef out, py_CFunction f) {
     out->type = tp_nativefunc;

tests/71_gc_bug.py

@@ -16,6 +16,7 @@ d.__path__ = '__main__'
 d.a = []
 d.gc = 1
 
+print('-' * 100)
 assert d.gc == 1
 del d.a
 
@@ -32,15 +33,3 @@ assert d.gc == 1
 # 5 nil
 # 6 __path__      [2]
 # 7 a             [3]
-
-import gc
-gc.collect()
-
-a = []
-del a
-assert gc.collect() == 1
-
-a = []
-a.append(a)
-del a
-assert gc.collect() == 1