From 8d04cffd9137b4a8c56b356de98b32023ae752f3 Mon Sep 17 00:00:00 2001
From: Rob9315 <dev.robk@gmail.com>
Date: Fri, 9 Jan 2026 02:54:49 +0100
Subject: [PATCH] fix stale reference bug when converting images

---
 src/Vaxis.zig | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/Vaxis.zig b/src/Vaxis.zig
index a9bb38b0..956d6d56 100644
--- a/src/Vaxis.zig
+++ b/src/Vaxis.zig
@@ -1013,7 +1013,7 @@ pub fn transmitImage(
     self: *Vaxis,
     alloc: std.mem.Allocator,
     tty: *IoWriter,
-    img: *zigimg.Image,
+    img: *const zigimg.Image,
     format: Image.TransmitFormat,
 ) !Image {
     if (!self.caps.kitty_graphics) return error.NoGraphicsCapability;
@@ -1021,6 +1021,8 @@ pub fn transmitImage(
     var arena = std.heap.ArenaAllocator.init(alloc);
     defer arena.deinit();
 
+    var img_modifiable = img.*;
+
     const buf = switch (format) {
         .png => png: {
             const png_buf = try arena.allocator().alloc(u8, img.imageByteSize());
@@ -1028,12 +1030,12 @@ pub fn transmitImage(
             break :png png;
         },
         .rgb => rgb: {
-            try img.convert(arena.allocator(), .rgb24);
-            break :rgb img.rawBytes();
+            try img_modifiable.convertNoFree(arena.allocator(), .rgb24);
+            break :rgb img_modifiable.rawBytes();
         },
         .rgba => rgba: {
-            try img.convert(arena.allocator(), .rgba32);
-            break :rgba img.rawBytes();
+            try img_modifiable.convertNoFree(arena.allocator(), .rgba32);
+            break :rgba img_modifiable.rawBytes();
         },
     };