From 04ef1f4276c0eab11eedb7ea7c14776022223ef0 Mon Sep 17 00:00:00 2001
From: FX Coudert <fxcoudert@gmail.com>
Date: Mon, 4 Sep 2017 10:40:00 +0200
Subject: [PATCH] chuck: patch for Xcode 9

---
 Formula/chuck.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Formula/chuck.rb b/Formula/chuck.rb
index e0595e7078..cd03a5a097 100644
--- a/Formula/chuck.rb
+++ b/Formula/chuck.rb
@@ -14,6 +14,15 @@ class Chuck < Formula
 
   depends_on :xcode => :build
 
+  # Fix pointer comparison error with Xcode 9
+  # Reported by email to chuck-dev@lists.cs.princeton.edu on 2017-09-04
+  if DevelopmentTools.clang_build_version >= 900
+    patch do
+      url "https://raw.githubusercontent.com/Homebrew/formula-patches/b052485f5d/chuck/xcode9.patch"
+      sha256 "fa2e008c8d90321c8876a49f83d7566dead362740711442f8e983d07e98a220b"
+    end
+  end
+
   def install
     # issue caused by the new macOS version, patch submitted upstream
     # to the chuck-dev mailing list