From d3ad533dd601574902fe8992ec5e011112ff0830 Mon Sep 17 00:00:00 2001
From: Christoffer Lerno <christoffer@aegik.com>
Date: Tue, 11 Feb 2025 00:13:04 +0100
Subject: [PATCH] Fix issue in List with sanitizers.

---
 lib/std/collections/list.c3 | 7 ++++---
 releasenotes.md             | 1 +
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/std/collections/list.c3 b/lib/std/collections/list.c3
index 8863ad748..5db7a4bab 100644
--- a/lib/std/collections/list.c3
+++ b/lib/std/collections/list.c3
@@ -234,11 +234,11 @@ fn void List.push_front(&self, Type type) @inline
 fn void List.insert_at(&self, usz index, Type type)
 {
 	self.reserve(1);
-	for (usz i = self.size; i > index; i--)
+	self.set_size(self.size + 1);
+	for (isz i = self.size - 1; i > index; i--)
 	{
 		self.entries[i] = self.entries[i - 1];
 	}
-	self.set_size(self.size + 1);
 	self.entries[index] = type;
 }
 
@@ -342,7 +342,8 @@ fn usz List.retain_if(&self, ElementPredicate selection)
 fn usz List.remove_using_test(&self, ElementTest filter, any context)
 {
 	usz old_size = self.size;
-	defer {
+	defer
+	{
 		if (old_size != self.size) self._update_size_change(old_size, self.size);
 	}
 	return list_common::list_remove_using_test(self, filter, false, context);
diff --git a/releasenotes.md b/releasenotes.md
index 1ff7965de..08569fba5 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -62,6 +62,7 @@
 - `set_env` would leak memory.
 - Fix issue where aligned bitstructs did not store/load with the given alignment.
 - Fix issue in GrowableBitSet with sanitizers.
+- Fix issue in List with sanitizers.
 
 ### Stdlib changes
 - Added '%h' and '%H' for printing out binary data in hexadecimal using the formatter.