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-rw-r--r--src/google/protobuf/arena.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/google/protobuf/arena.h b/src/google/protobuf/arena.h
index b3d66d91..cf07b9fc 100644
--- a/src/google/protobuf/arena.h
+++ b/src/google/protobuf/arena.h
@@ -213,7 +213,7 @@ struct ArenaOptions {
// well as RepeatedPtrField.
#if __cplusplus >= 201103L
-class Arena final {
+class LIBPROTOBUF_EXPORT Arena final {
#else
class LIBPROTOBUF_EXPORT Arena {
#endif