Add missing include.

libstdc++ and libc++ pulled this in transitively so I didn't notice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202753 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index c0b2d551d339fc6b51a9c689a520e8f5b9618c5a..b57a8b07a32463c90c9725b531217b85360b8a02 100644 (file)
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -39,6 +39,7 @@
 #include <iterator>
 #include <stack>
 #include <string>
+#include <tuple>
 #include <vector>
 
 #ifdef HAVE_SYS_STAT_H