Fix reliance on the sign of char in fnv32 and fnv64

[folly.git] / folly / String-inl.h

diff --git a/folly/String-inl.h b/folly/String-inl.h
index dbfefa010fb6f97ac530ce280b74f086996b7ec0..8baf8f85690c6fe5970f1903c9735a81b153e0ba 100644 (file)
--- a/folly/String-inl.h
+++ b/folly/String-inl.h
@@ -19,6 +19,8 @@
 #include <stdexcept>
 #include <iterator>
 
+#include <folly/CppAttributes.h>
+
 #ifndef FOLLY_STRING_H_
 #error This file may only be included from String.h
 #endif
@@ -228,6 +230,7 @@ void uriUnescape(StringPiece str, String& out, UriEscapeMode mode) {
         break;
       }
       // else fallthrough
+      FOLLY_FALLTHROUGH;
     default:
       ++p;
       break;