From ec0846a00fd3d0ae0b7b94961f855b8ab6c938db Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Mon, 12 Feb 2018 03:21:18 -0500
Subject: [PATCH] std.heap.ArenaAllocator: fix incorrectly activating safety
 check

---
 std/heap.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/std/heap.zig b/std/heap.zig
index f309a08a8a..ca6736af1e 100644
--- a/std/heap.zig
+++ b/std/heap.zig
@@ -232,7 +232,7 @@ pub const ArenaAllocator = struct {
         var cur_node = if (self.buffer_list.last) |last_node| last_node else try self.createNode(0, n + alignment);
         while (true) {
             const cur_buf = cur_node.data[@sizeOf(BufNode)..];
-            const addr = @ptrToInt(&cur_buf[self.end_index]);
+            const addr = @ptrToInt(cur_buf.ptr) + self.end_index;
             const rem = @rem(addr, alignment);
             const march_forward_bytes = if (rem == 0) 0 else (alignment - rem);
             const adjusted_index = self.end_index + march_forward_bytes;