From 6305d489475f0eb91b0fba59fd93fc72191a28eb Mon Sep 17 00:00:00 2001
From: Jeff Epler <jepler@gmail.com>
Date: Tue, 10 Dec 2019 17:05:47 -0600
Subject: gc_free: give a better error when freeing outside of VM

---
 py/gc.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'py')

diff --git a/py/gc.c b/py/gc.c
index a8a5fde12..5e631f5ed 100755
--- a/py/gc.c
+++ b/py/gc.c
@@ -667,6 +667,9 @@ void gc_free(void *ptr) {
     if (ptr == NULL) {
         GC_EXIT();
     } else {
+        if (MP_STATE_MEM(gc_pool_start) == 0) {
+            reset_into_safe_mode(GC_ALLOC_OUTSIDE_VM);
+        }
         // get the GC block number corresponding to this pointer
         assert(VERIFY_PTR(ptr));
         size_t block = BLOCK_FROM_PTR(ptr);
-- 
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