diff --git a/Formula/szl.rb b/Formula/szl.rb
index 39e07e8e1cc..6e1637de333 100644
--- a/Formula/szl.rb
+++ b/Formula/szl.rb
@@ -7,16 +7,15 @@ class Szl < Formula
 
   depends_on 'binutils' # For objdump
   depends_on 'icu4c'
-  depends_on 'protobuf' # for protoc
+  depends_on 'protobuf'
   depends_on 'pcre'
 
-  fails_with :clang do
-    build 318
-    cause <<-EOS.undent
-      engine/symboltable.cc:47:7: error: qualified reference to 'Proc' is a constructor name rather than a type wherever a constructor can be declared
-      Proc::Proc* SymbolTable::init_proc_ = NULL;
-    EOS
-  end
+  # 10.9 and clang fixes
+  # Include reported upstream in:
+  # https://code.google.com/p/szl/issues/detail?id=28
+  # Clang issue reported upstream in:
+  # https://code.google.com/p/szl/issues/detail?id=34
+  patch :DATA
 
   def install
     ENV['OBJDUMP'] = "#{HOMEBREW_PREFIX}/bin/gobjdump"
@@ -25,3 +24,42 @@ class Szl < Formula
     system "make install"
   end
 end
+
+__END__
+diff --git a/src/utilities/random_base.cc b/src/utilities/random_base.cc
+index 1d64521..e488321 100644
+--- a/src/utilities/random_base.cc
++++ b/src/utilities/random_base.cc
+@@ -18,6 +18,7 @@
+ #include <string>
+ #include <memory.h>
+ #include <assert.h>
++#include <unistd.h>
+ 
+ #include "public/porting.h"
+ #include "public/logging.h"
+diff --git a/src/engine/code.cc b/src/engine/code.cc
+index d149f9a..75ab84b 100644
+--- a/src/engine/code.cc
++++ b/src/engine/code.cc
+@@ -18,6 +18,7 @@
+ #include <string>
+ #include <errno.h>
+ #include <sys/mman.h>
++#include <unistd.h>
+ 
+ #include "engine/globals.h"
+ #include "public/logging.h"
+diff --git a/src/engine/symboltable.cc b/src/engine/symboltable.cc
+index 6d84592..71965f3 100644
+--- a/src/engine/symboltable.cc
++++ b/src/engine/symboltable.cc
+@@ -44,7 +44,7 @@ namespace sawzall {
+ // ------------------------------------------------------------------------------
+ // Implementation of SymbolTable
+ 
+-Proc::Proc* SymbolTable::init_proc_ = NULL;
++Proc* SymbolTable::init_proc_ = NULL;
+ 
+ List<TableType*>* SymbolTable::table_types_ = NULL;
+ TableType* SymbolTable::collection_type_ = NULL;