util/AllocatedString, ...: add missing include for std::exchange()

Fixes building with GCC 12.
2021-11-19 16:04:25 +01:00
parent d94e8bd82d
commit eea2d35d3a
6 changed files with 6 additions and 2 deletions
--- a/src/input/InputStream.hxx
+++ b/src/input/InputStream.hxx
@@ -27,6 +27,7 @@
 #include <cassert>
 #include <memory>
 #include <string>
+#include <utility>

 struct Tag;
 class InputStreamHandler;