Boost C++ Libraries: Ticket #10688: Fusion vector error when using Qt

attachment set

rlayman2000@… — Thu, 23 Oct 2014 13:25:57 GMT

attachment → fusion_error.tar.gz

demonstrates the fusion error when using with qt

attachment set

rlayman2000@… — Mon, 27 Oct 2014 13:36:29 GMT

attachment → fusion_qt_error.tar.gz

This is a stripped down version of the previous attachment that demonstrates the bug

rlayman2000@… — Mon, 27 Oct 2014 16:24:48 GMT

Just including a moc file, generated by CMake, to a source file that includes a fusion vector.hpp is enough to get this error. On the provided example, removing vector.hpp or the include for the moc file will allow the program to compile.

Joel de Guzman — Mon, 27 Oct 2014 23:57:24 GMT

I don't use QT. Can you provide a complete cpp file with the MOC?

Jürgen Hunold — Tue, 28 Oct 2014 06:49:02 GMT

This is not a fusion bug. Qt's moc has an incomplete c++ parser. Please report such bugs to Qt so they can "fix" their parser.

Workaround:

Put "#ifndef Q_MOC_RUN" around the fusion includes. moc will then skip the includes.

diff --git INDEX:/src/main.cpp WORKDIR:/src/main.cpp
index 3a8f0a8..7fe69c1 100755
--- INDEX:/src/main.cpp
+++ WORKDIR:/src/main.cpp
@@ -1,5 +1,8 @@
 #include <iostream>
+
+#ifndef Q_MOC_RUN
 #include <boost/fusion/include/vector.hpp>
+#endif
 int main (int argc, char *argv[])
 {

rlayman2000@… — Tue, 28 Oct 2014 11:32:12 GMT

I was starting to think that was the case too. I'll file a bug report with Qt then. Thanks for the help.

Sat, 14 Mar 2015 15:08:15 GMT

Joel, please close this.

status changed; resolution set

Joel de Guzman — Fri, 12 Jun 2015 06:51:30 GMT

status new → closed
resolution → invalid