bpo-43683: Handle generator entry in bytecode (GH-25138)
* Handle check for sending None to starting generator and coroutine into bytecode.
* Document new bytecode and make it fail gracefully if mis-compiled.
diff --git a/Include/opcode.h b/Include/opcode.h
index ea484c5..4f52c5f 100644
--- a/Include/opcode.h
+++ b/Include/opcode.h
@@ -106,6 +106,7 @@ extern "C" {
#define LOAD_FAST 124
#define STORE_FAST 125
#define DELETE_FAST 126
+#define GEN_START 129
#define RAISE_VARARGS 130
#define CALL_FUNCTION 131
#define MAKE_FUNCTION 132