https://bugs.gentoo.org/890847
--- a/src/cpp-utils/thread/LeftRight.h
+++ b/src/cpp-utils/thread/LeftRight.h
@@ -2,6 +2,7 @@
 #include <functional>
 #include <mutex>
 #include <thread>
+#include <stdexcept>
 #include <cpp-utils/macros.h>
 #include <array>