py: Add iter_buf to getiter type method.

Allows to iterate over the following without allocating on the heap:
- tuple
- list
- string, bytes
- bytearray, array
- dict (not dict.keys, dict.values, dict.items)
- set, frozenset

Allows to call the following without heap memory:
- all, any, min, max, sum

TODO: still need to allocate stack memory in bytecode for iter_buf.

1 files changed, 1 insertions, 1 deletions

diff --git a/py/vm.c b/py/vm.c
index 97f344b08..917d41a11 100644
--- a/py/vm.c
+++ b/py/vm.c
@@ -723,7 +723,7 @@ unwind_jump:;
 
                 ENTRY(MP_BC_GET_ITER):
                     MARK_EXC_IP_SELECTIVE();
-                    SET_TOP(mp_getiter(TOP()));
+                    SET_TOP(mp_getiter(TOP(), NULL));
                     DISPATCH();
 
                 ENTRY(MP_BC_FOR_ITER): {