Include missing <ostream>

jupp0r · Feb 11, 2020 · 023c93e · 023c93e
1 parent 7a4b529
commit 023c93e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/core/src/histogram.cc b/core/src/histogram.cc
@@ -4,6 +4,7 @@
 #include <cassert>
 #include <iterator>
 #include <numeric>
+#include <ostream>
 
 namespace prometheus {