From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 10 Jul 2021 17:36:07 +0000 (+0100)
Subject: zccord: Fix a panic in some iteration cases
X-Git-Tag: otter-0.7.2~146
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=bc232053a7f9dbae2a6fc42fc334134edac6ea7b;p=otter.git

zccord: Fix a panic in some iteration cases

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/base/zcoord.rs b/base/zcoord.rs
index a7a5fb31..9ab03683 100644
--- a/base/zcoord.rs
+++ b/base/zcoord.rs
@@ -369,7 +369,7 @@ impl Mutable {
     *self.limbs.get(i).unwrap_or(&ZERO)
   }
   fn extend_to_limb(&mut self, i: usize) {
-    if self.limbs.len() < i {
+    if self.limbs.len() <= i {
       self.limbs.resize(i+1, ZERO);
     }
   }