1 files changed, 9 insertions, 3 deletions
diff --git a/main.c b/main.c
index c60cded16..c05157e86 100755
--- a/main.c
+++ b/main.c
@@ -105,12 +105,18 @@ void start_mp(supervisor_allocation* heap) {
     // Stack limit should be less than real stack size, so we have a chance
     // to recover from limit hit.  (Limit is measured in bytes.)
     mp_stack_ctrl_init();
-    mp_stack_set_limit(stack_alloc->length - 1024);
+
+    if (stack_alloc != NULL) {
+        mp_stack_set_limit(stack_alloc->length - 1024);
+    }
+
 
 #if MICROPY_MAX_STACK_USAGE
     // _ezero (same as _ebss) is an int, so start 4 bytes above it.
-    mp_stack_set_bottom(stack_alloc->ptr);
-    mp_stack_fill_with_sentinel();
+    if (stack_alloc != NULL) {
+        mp_stack_set_bottom(stack_alloc->ptr);
+        mp_stack_fill_with_sentinel();
+    }
 #endif
 
     // Sync the file systems in case any used RAM from the GC to cache. As soon