zig

commit 87d8cb19e4eed905b93d39554ea9a2a1012f6668 (tree)
parent 6de0c622ff770628110208f5edeff54940cf5caa
Author: FlandreScarlet <flandere@synkhronix.com>
Date:   Thu, 23 Jun 2022 14:07:08 +0200

std.debug: fix ConfigurableTrace.dump OOB

The for-loop in dump() would index out of bounds if `t.index` is greater
than size, because `end` is the maximum of `t.index` and `size` rather than the
minimum.
Diffstat:
M
lib/std/debug.zig
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/std/debug.zig b/lib/std/debug.zig
@@ -1999,7 +1999,7 @@ pub fn ConfigurableTrace(comptime size: usize, comptime stack_frame_count: usize
 
             const tty_config = detectTTYConfig();
             const stderr = io.getStdErr().writer();
-            const end = @maximum(t.index, size);
+            const end = @minimum(t.index, size);
             const debug_info = getSelfDebugInfo() catch |err| {
                 stderr.print(
                     "Unable to dump stack trace: Unable to open debug info: {s}\n",