fix mac compile (#12751)

jacquesqiao · web-flow · commit 64d48f4d6af5 · 2018-08-17T09:15:38.000+08:00
diff --git a/paddle/fluid/framework/ir/graph_pattern_detecter.cc b/paddle/fluid/framework/ir/graph_pattern_detecter.cc
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include <array>
 #include <string>
 #include <vector>
 
