Circular dependency in SimG4Core between Application and GFlash

[Dr15Jones]

SimG4Core/Application links with SimG4Core/GFlash while within G4Flash we have these includes

src/GflashEMShowerModel.cc:#include "SimG4Core/Application/interface/SteppingAction.h"
src/GflashHadronShowerModel.cc:#include "SimG4Core/Application/interface/SteppingAction.h"

In order for UBSAN to work, SimG4Core/GFlash needs to link with the library that has the definition of SteppingAction (in order to get the type info).

[Dr15Jones]

assign simulation

[cmsbuild]

New categories assigned: simulation

@mdhildreth,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks

[cmsbuild]

A new Issue was created by @Dr15Jones Chris Jones.

@davidlange6, @Dr15Jones, @smuzaffar, @fabiocos, @kpedro88 can you please review it and eventually sign/assign? Thanks.

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[civanch]

@Dr15Jones , thanks, I recently also see this and want to fix asap.

[civanch]

Fixed in #27452

[Dr15Jones]

@civanch please sign this issue as the problem has been fixed.

[civanch]

+1

[cmsbuild]

This issue is fully signed and ready to be closed.