From 8fb0cedce3d7448047382aac124b953b3237525f Mon Sep 17 00:00:00 2001
From: Keith Turner <kturner@apache.org>
Date: Mon, 13 Oct 2025 11:11:36 -0400
Subject: [PATCH] tests length of zero allocation

Test code for zero length allocation was not checking the length
of the returned slice was zero. Added a check for this.  Also
added a check for the pointer based on examining how the current
code works.
---
 lib/std/heap.zig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/std/heap.zig b/lib/std/heap.zig
index b5fd8229597b..b5f9d64a54cc 100644
--- a/lib/std/heap.zig
+++ b/lib/std/heap.zig
@@ -598,6 +598,8 @@ pub fn testAllocator(base_allocator: mem.Allocator) !void {
 
     // Zero-length allocation
     const empty = try allocator.alloc(u8, 0);
+    try testing.expect(empty.len == 0);
+    try testing.expect(empty.ptr == @as([*]u8, @ptrFromInt(std.math.maxInt(usize))));
     allocator.free(empty);
     // Allocation with zero-sized types
     const zero_bit_ptr = try allocator.create(u0);