From 4d0ab6d254578f8cdceb2551476166df3b1ee3d3 Mon Sep 17 00:00:00 2001
From: aravind <aravind@fb.com>
Date: Tue, 16 Apr 2013 13:13:33 -0700
Subject: [PATCH] Null check for colorize

---
 hphp/util/trace.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hphp/util/trace.h b/hphp/util/trace.h
index 7e65ce5bf..d58d7f0f8 100644
--- a/hphp/util/trace.h
+++ b/hphp/util/trace.h
@@ -244,6 +244,7 @@ inline const char* color(const char* color) {
     auto const traceEnv  = getenv("HPHP_TRACE_FILE");
     auto const assumeTTY = getenv("HPHP_TRACE_TTY");
     if (assumeTTY) return true;
+    if (!traceEnv) return false;
     return
       !strcmp(traceEnv, "/dev/stdout") ? isatty(1) :
       !strcmp(traceEnv, "/dev/stderr") ? isatty(2) :