https://bugs.gentoo.org/905908
https://github.com/facebookresearch/fastText/commit/6c2204ba66776b700095ff73e3e599a908ffd9c3

--- a/src/args.cc
+++ b/src/args.cc
@@ -9,6 +9,7 @@
 #include "args.h"
 
 #include <stdlib.h>
+#include <cstdint>
 
 #include <iostream>
 #include <stdexcept>