bacula-15.0.3-qt6-gentoo.patch from https://dev.gentoo.org/~tomjbe/distfiles/

Index: src/qt-console/qstd.cpp
--- src/qt-console/qstd.cpp.orig
+++ src/qt-console/qstd.cpp
@@ -30,7 +30,8 @@ int qstd::promptInt(int base /* =10 */) { /* Usage: in
     QString numstr;
     int result;
     bool ok;
-    cout << ": " << flush;
+    cout << ": ";
+    cout.flush();
     while (1) {
         numstr = cin.readLine();
         result = numstr.toInt(&ok, base);
