From 1054e67f01e0f2eff1adf4982189ebba0a3696ab Mon Sep 17 00:00:00 2001
From: kcbanner <kcbanner@gmail.com>
Date: Sun, 13 Aug 2023 22:53:15 -0400
Subject: [PATCH] dwarf: add missing length check in rowColumns

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

diff --git a/lib/std/dwarf/call_frame.zig b/lib/std/dwarf/call_frame.zig
index 1501a245f6..f92e631514 100644
--- a/lib/std/dwarf/call_frame.zig
+++ b/lib/std/dwarf/call_frame.zig
@@ -452,6 +452,7 @@ pub const VirtualMachine = struct {
 
     /// Return a slice backed by the row's non-CFA columns
     pub fn rowColumns(self: VirtualMachine, row: Row) []Column {
+        if (row.columns.len == 0) return &.{};
         return self.columns.items[row.columns.start..][0..row.columns.len];
     }