static GroundCallback problem

[SummersRain]

I created multiple FGFDMExec Pointers in the same process for multiple airplanes. Since GroundCallback in the FGLocation class is a static pointer, SetGroundCallback(0) is called when FGFDMExec objects are destructed, which causes other FGFDMExec objects to crash when destructed. On the other hand, when simulating multiple aircraft, a call to SetTerrainGeoCentRadius for the GroundCallback of one aircraft affects the others.

[seanmcleod]

This is a known issue, take a look at - #201

[bcoconni]

This is a known issue, take a look at - #201

Agreed, I suggest to continue the discussion in the issue #201 and this is issue is closed as a duplicate.