From 72017d4bd5f69eb243053a76227753b69bdf6b56 Mon Sep 17 00:00:00 2001
From: Ryan Liptak <squeek502@hotmail.com>
Date: Sat, 13 Sep 2025 19:32:52 -0700
Subject: [PATCH] mem.replace: Document that input/output cannot overlap

---
 lib/std/mem.zig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/std/mem.zig b/lib/std/mem.zig
index f688bafcae..0b0967a566 100644
--- a/lib/std/mem.zig
+++ b/lib/std/mem.zig
@@ -3785,6 +3785,7 @@ test rotate {
 
 /// Replace needle with replacement as many times as possible, writing to an output buffer which is assumed to be of
 /// appropriate size. Use replacementSize to calculate an appropriate buffer size.
+/// The `input` and `output` slices must not overlap.
 /// The needle must not be empty.
 /// Returns the number of replacements made.
 pub fn replace(comptime T: type, input: []const T, needle: []const T, replacement: []const T, output: []T) usize {