From 7f1c98177bb27a45886fd7e42aa72bef9b1e4a0f Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky
Date: Sat, 28 Mar 2015 01:14:45 +0200
Subject: vm: Support strict stackless mode, with proper exception reporting.

I.e. in this mode, C stack will never be used to call a Python function,
but if there's no free heap for a call, it will be reported as
RuntimeError (as expected), not MemoryError.
---
 py/mpconfig.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'py/mpconfig.h')

diff --git a/py/mpconfig.h b/py/mpconfig.h
index 94e2737de..d561f8079 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -125,11 +125,19 @@
 #define MICROPY_QSTR_BYTES_IN_LEN (1)
 #endif
 
-// Avoid using C stack when making Python function calls.
+// Avoid using C stack when making Python function calls. C stack still
+// may be used if there's no free heap.
 #ifndef MICROPY_STACKLESS
 #define MICROPY_STACKLESS (0)
 #endif
 
+// Never use C stack when making Python function calls. This may break
+// testsuite as will subtly change which exception is thrown in case
+// of too deep recursion and other similar cases.
+#ifndef MICROPY_STACKLESS_STRICT
+#define MICROPY_STACKLESS_STRICT (0)
+#endif
+
 /*****************************************************************************/
 /* Micro Python emitters                                                     */
 
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