diff -uNr gnuchess-6.2.5/src/components.cc gnuchess-6.2.5.mod/src/components.cc
--- gnuchess-6.2.5/src/components.cc	2017-06-11 18:17:14.000000000 +0300
+++ gnuchess-6.2.5.mod/src/components.cc	2018-11-09 14:17:10.952608702 +0200
@@ -171,6 +171,6 @@
 
 void TerminateInput()
 {
-  pthread_cancel( input_thread );
+  pthread_kill( input_thread, 0 );
   pthread_join( input_thread, NULL );
 }