std.testing: make the caret indicator line more helpful

2022-07-25 14:51:22 +02:00 · 2022-07-25 14:51:22 +02:00 · 8f3ab96b0e
commit 8f3ab96b0e
parent 0d120fcb89
1 changed files with 4 additions and 1 deletions
--- 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 {