fix assorted problems exposed by libcxx

yfeldblum · facebook-github-bot · commit f234ea6885cc · 2025-03-19T16:15:46.000-07:00
Reviewed By: ot, yuxuanchen1997

Differential Revision: D71470842

fbshipit-source-id: e6c120c0cfbe8aac04fb063d16e4882b575f2c3c
diff --git a/folly/io/async/WriteFlags.h b/folly/io/async/WriteFlags.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#include <cstdint>
+
 namespace folly {
 
 /*
