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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 {
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