invokeMethod is messing up signatures

[ocgltd]

I am running into a strange runtime error when trying to invoke a method. I invoke the method as follows:

QMetaObject::invokeMethod(
                        classPtr,
                        methodName,
                        Qt::QueuedConnection,
                        Q_ARG(ClassA_Types::enumD, ClassA_Types::enumD1), 
                        Q_ARG(ClassA_Types::enumE, ClassA_Types::enumE1),                
                        Q_ARG(ClassB, sMessagePtr->getter()),                                                        
                        Q_ARG(ClassB, rMessagePtr->getter()),                                                        
                        Q_ARG(ClassA_Types::MyStruct, sinfo),                                     
                        Q_ARG(ClassA_Types::MyStruct, sinfo)                                      
                        );

but at run time the signature does not match candidate! When I compile and run under Qt 5.15.12 I get this error:

When I compile and run under Qt 6.5.0 I get this error:

QMetaObject::invokeMethod: No such method MyNameSpace::ClassC::inv_rx_response(ClassA_Types::enumD,ClassB,ClassB)
Candidates are:
                                                                    inv_rx_response(ClassA_Types::enumD,ClassA_Types::enumE,MyNameSpace::ClassB,ClassB,ClassA_Types::MyStruct,ClassA_Types::MyStruct)

(I added spacing into the error message to make it obvious where the namespace appears)

[Christian Ehrlicher]

Start with a clean build dir and make sure you don't have generated files in your source dir.

[Christian Ehrlicher]

@ocgltd said in invokeMethod is messing up signatures:

inv_rx_response(ClassA_Types::enumD,ClassB,ClassB)

This does not match your code.

Please provide a minimal, compilable example of your problem.

[ocgltd]

I've used invokeMethod many times, and I'm sure a minimum example will work fine. I was hoping for some advice on what I might be doing wrong to cause this. I'm pretty sure I've done something silly but just can see it.

And the project way to large to post...

[Christian Ehrlicher]

Since you did not even show the correct output for the failure case how should we help?

[ocgltd]

After some experimenting I'm narrow the problem down. Here's where it gets really strange. I placed ALL of my invokation parameters (Q_ARGS) into a single struct, and pass that struct to invokeMethod.

The error still appears, and the candidate function shows the single struct. But, the calling method still shows the old 3 parameters! It's as if the code wasn't compiling properly.

I reset all file permissions in my source tree, cleaned, and qmaked, and recompiled. Still same problem. I assume this is something in the moc file by I have no idea how to fix. Why is invokeMethod still trying to use the old 3 parameters?

Can someone make a suggestion on diagnosing/fixing?

[Christian Ehrlicher]

Start with a clean build dir and make sure you don't have generated files in your source dir.

[ocgltd]

That solved it. I'm not sure what happened, but something got messed up my build dir.