From 0f9e81197be31d91c52a86ef2c399da041a9c380 Mon Sep 17 00:00:00 2001
From: mwilliams <mwilliams@fb.com>
Date: Thu, 18 Apr 2013 17:01:36 -0700
Subject: [PATCH] Prevent some repo mode optimizations

Since its seen the whole program, it optimizes class_exists
to false if there's no definition anywhere.
Replace local variables with globals so that assignments can't
be optimized away (since we're gathering coverage information).
---
 hphp/test/quick/class_interface_trait_exists.php |  2 +-
 hphp/test/quick/coverage.php                     | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/hphp/test/quick/class_interface_trait_exists.php b/hphp/test/quick/class_interface_trait_exists.php
index 18671fa7f..ff111b41d 100644
--- a/hphp/test/quick/class_interface_trait_exists.php
+++ b/hphp/test/quick/class_interface_trait_exists.php
@@ -8,7 +8,7 @@ function __autoload($n) {
 trait tttt {}
 class cccc {}
 interface iiii {}
-
+if (0) { class zzzz {} interface zzzz {} }
 function main() {
   var_dump(class_exists('fooo', false));
   var_dump(class_exists('fooo'));
diff --git a/hphp/test/quick/coverage.php b/hphp/test/quick/coverage.php
index 383b1c24a..da6cbbebf 100644
--- a/hphp/test/quick/coverage.php
+++ b/hphp/test/quick/coverage.php
@@ -4,7 +4,7 @@ function b($s) {
   if (strlen($s) == 4) {
     return 12;
   }
-  $z = 234;
+  $GLOBALS['z'] = 234;
   return 8;
 }
 
@@ -20,8 +20,8 @@ function a($b) {
 function f() {
   for ($i = 0; $i < 4; ++$i) {
     a($i < 3);
-    $tmp = $i;
-    $i = $tmp;
+    $GLOBALS['tmp'] = $i;
+    $i = $GLOBALS['tmp'];
   }
 }
 
@@ -29,11 +29,11 @@ function enable() {
   echo "Going to enable\n";
   fb_enable_code_coverage();
   echo "Enabled\n";
-  $z = 3;
+  $GLOBALS['z'] = 3;
 }
 
 function doenable() {
-  $y = 2;
+  global $y;
   enable();
   $y += 43;
 }