Create the dirent.h portability header

[folly.git] / folly / Conv.h

diff --git a/folly/Conv.h b/folly/Conv.h
index e602f6ca7a3dcca31b62a120a51a14675d3840e4..b730857bf68f9dcd5c04e2b2b439fa180856a2a3 100644 (file)
--- a/folly/Conv.h
+++ b/folly/Conv.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Facebook, Inc.
+ * Copyright 2016 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,8 +21,7 @@
  * @author Andrei Alexandrescu (andrei.alexandrescu@fb.com)
  */
 
-#ifndef FOLLY_BASE_CONV_H_
-#define FOLLY_BASE_CONV_H_
+#pragma once
 
 #include <folly/FBString.h>
 #include <folly/Likely.h>
@@ -793,6 +792,17 @@ toAppend(const Ts&... vs) {
   ::folly::detail::toAppendStrImpl(vs...);
 }
 
+#ifdef _MSC_VER
+// Special case pid_t on MSVC, because it's a void* rather than an
+// integral type. We can't do a global special case because this is already
+// dangerous enough (as most pointers will implicitly convert to a void*)
+// just doing it for MSVC.
+template <class Tgt>
+void toAppend(const pid_t a, Tgt* res) {
+  toAppend(uint64_t(a), res);
+}
+#endif
+
 /**
  * Special version of the call that preallocates exaclty as much memory
  * as need for arguments to be stored in target. This means we are
@@ -1287,5 +1297,3 @@ to(const Src & value) {
 #undef FOLLY_RANGE_CHECK_STRINGIZE
 #undef FOLLY_RANGE_CHECK_STRINGIZE2
 #endif
-
-#endif /* FOLLY_BASE_CONV_H_ */