From a8d3760c5bc31ed114516c89f31d9107b803a6b7 Mon Sep 17 00:00:00 2001
From: Benjamin Thompson <bgt37@cornell.edu>
Date: Fri, 21 Feb 2025 16:00:37 +1000
Subject: [PATCH] added compile_error test coverage for issue 17166

---
 ...cat_of_empty_slice_len_increment_beyond_bounds.zig | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 test/cases/compile_errors/concat_of_empty_slice_len_increment_beyond_bounds.zig

diff --git a/test/cases/compile_errors/concat_of_empty_slice_len_increment_beyond_bounds.zig b/test/cases/compile_errors/concat_of_empty_slice_len_increment_beyond_bounds.zig
new file mode 100644
index 0000000000..092522c1fa
--- /dev/null
+++ b/test/cases/compile_errors/concat_of_empty_slice_len_increment_beyond_bounds.zig
@@ -0,0 +1,11 @@
+export fn concat_of_empty_slice_len_increment_beyond_bounds() void {
+    comptime {
+        var list: []u8 = &.{};
+        list.len += 1;
+        list = list ++ list;
+    }
+}
+
+// error
+//
+// :5:16: error: dereference of '*[1]u8' exceeds bounds of containing decl of type '[0]u8'