I have a MFC project that uses libpqxx. All settings are default.
Release mode is working properly as i expected. But when i switch to Debug mode, it shows an exception and says Debug Assertion:
The most interesting thing is, If I use Shared DLL instead of Static (on Debug of course) it works!
Basicaly, Debug with Static Library shows this exception/error. If i switch to Shared DLL it works again. Of course i can use shared as debug and static as release but Is this the right thing?
Note: This project is base and fresh. I did not changed any config from Configuratrion Manager.
Any suggestion?
Alright, I am not sure if libpqxx uses MFC or not (and which one?). I suspect that you are allocating some memory from one heap, and de-allocating it from another heap. Mixing MFC versions, as well as Static/non-Static mixture of MFC will cause this assertion.
Do not treat it as working on Release build! It is just not defending itself (i.e. now showing any assertion message). Your best bet is to locate the cause of this problem, and first one goes by looking-up the call stack (hit Retry on this assertion dialog).
See, if libpqxx depends on MFC, or it disallws mixing Static version of MFC. You can either see the documentation of libpqxx, and/or use Dependency Walker to see if library is using MFC.