path: root/pkgs/development/compilers/hhvm/flexible-array-members-gcc6.patch

diff --git a/third-party/re2/src/re2/dfa.cc b/third-party/re2/src/re2/dfa.cc
index 483f678..3aa3610 100644
--- a/third-party/re2/src/re2/dfa.cc
+++ b/third-party/re2/src/re2/dfa.cc
@@ -101,8 +101,13 @@ class DFA {
     uint flag_;         // Empty string bitfield flags in effect on the way
                         // into this state, along with kFlagMatch if this
                         // is a matching state.
-    std::atomic<State*> next_[];    // Outgoing arrows from State,
-                        // one per input byte class
+// Work around the bug affecting flexible array members in GCC 6.1 and 6.2.
+// (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70932)
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ == 6 && __GNUC_MINOR__ >= 1
+    std::atomic<State*> next_[0];   // Outgoing arrows from State, one per input byte class
+#else
+    std::atomic<State*> next_[];    // Outgoing arrows from State, one per input byte class
+#endif
   };

   enum {