From 8f3ab96b0e8cd22dc98f9fe352c5d4fff491dd0e Mon Sep 17 00:00:00 2001
From: r00ster <r00ster91@proton.me>
Date: Mon, 25 Jul 2022 14:51:22 +0200
Subject: [PATCH] std.testing: make the caret indicator line more helpful

---
 lib/std/testing.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/std/testing.zig b/lib/std/testing.zig
index 6899f3e323..67f6b33122 100644
--- a/lib/std/testing.zig
+++ b/lib/std/testing.zig
@@ -543,7 +543,10 @@ fn printIndicatorLine(source: []const u8, indicator_index: usize) void {
         while (i < indicator_index) : (i += 1)
             print(" ", .{});
     }
-    print("^\n", .{});
+    if (indicator_index >= source.len)
+        print("^ (end of string)\n", .{})
+    else
+        print("^ ('\\x{x:0>2}')\n", .{source[indicator_index]});
 }
 
 fn printWithVisibleNewlines(source: []const u8) void {