GCC compiler warnings

Hello,

GCC generates warnings about many different problems:
E.g.

• truncated output
• misleading indentation
• unsed variables
• dangling else
• unused functions
• differences between pointer signedness
• Weirdly constructed for loop headers. E.g. for (i = 0, pcrp = &qrp->Colresp; crp = *pcrp; )

I attached the output of GCC on stderr.

Please let me know if and how you want to handle that. Some warnings like the dangling else and misleading indentation can be the cause of bugs or problems with debugging later. Truncated output is only mildly concerning.

On a side note, I put together a rather large patch set that changes the handling of the cflags and cxxflags in the CMake configuration files to make sure invalid options for the compiler aren't passed. E.g. GCC exclusive options passed to G++ and vice versa.

Kind regards

Noel Kuntze