--- 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);
 }