feature/noverlay 65a7b5a802 3/3: ; * src/itree.c (check_subtree): fix logical error in eassert

[Stefan Monnier]

branch: feature/noverlay
commit 65a7b5a802a15daa6274403fef822ec3c9b95469
Author: Matt Armstrong <matt@rfc20.org>
Commit: Stefan Monnier <monnier@iro.umontreal.ca>

    ; * src/itree.c (check_subtree): fix logical error in eassert
---
 src/itree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/itree.c b/src/itree.c
index deef0335cf..1728a8ab3a 100644
--- a/src/itree.c
+++ b/src/itree.c
@@ -277,7 +277,7 @@ check_subtree (struct interval_node *node,
   if (check_red_black_invariants)
     {
       eassert (left_result.black_height == right_result.black_height);
-      eassert (node->parent != ITREE_NULL || !node->red || !node->parent->red);
+      eassert (node->parent == ITREE_NULL || !node->red || !node->parent->red);
     }
 
   result.size = 1 + left_result.size + right_result.size;