--- /dev/null
+--- libdbus-c++-0.9.0/src/pipe.cpp.orig 2011-11-29 23:16:31.000000000 +0100
++++ libdbus-c++-0.9.0/src/pipe.cpp 2018-04-23 21:28:46.612510662 +0200
+@@ -83,5 +83,5 @@
+ void Pipe::signal()
+ {
+ // TODO: ignoring return of read/write generates warning; maybe relevant for eventloop work...
+- ::write(_fd_write, '\0', 1);
++ ::write(_fd_write, "\0", 1);
+ }