Declare missing environ variable

Summary: Declaring `extern char** environ` in `experimental/TestUtil.cpp` fixes a compilation issue on OS X 10.10.
Closes #311

Reviewed By: @yfeldblum

Differential Revision: D2419037

Pulled By: @JoelMarcey

diff --git a/folly/experimental/TestUtil.cpp b/folly/experimental/TestUtil.cpp
index 4ff1cf32cbdced29eb8fb52b96dde7619a79153c..dbdd7bd7070b6c9a55d619fc1bb435b095c52c43 100644 (file)
--- a/folly/experimental/TestUtil.cpp
+++ b/folly/experimental/TestUtil.cpp
@@ -28,6 +28,10 @@
 #include <folly/FileUtil.h>
 #include <folly/String.h>
 
+#ifndef _MSC_VER
+extern char** environ;
+#endif
+
 namespace folly {
 namespace test {