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[Magliola]

I am porting a large program that was compiled with the Digitial FORTRAN / COMPAQ FORTRAN compiler to FTN95 with the Visual Studio Shell. The source is now compiling, linking and generating a running EXE. I have built two EXE's. Version 1 using DEBUG+WIN32, and Version 2 using CheckMate+WIN32. Both versions use the exact same source code.

Using the Visual Studio debugger to step through the program, Version 1 shows a variable equal to zero, while Version 2 identifies the same instance of the variable as UNDEFINED. I assume CheckMate is giving me a true result and the variable is undefined. So now I am trying to hunt down the error. (I did not write the original code and it is many thousands of lines long.)

QUESTIONS:
1) What are the differences between DEBUG and CheckMate compiler options? Can someone point me to the correct spot in the documentation? I don't see in the documentation which type of errors DEBUG versus CheckMate will flag.

2) I am learning the debugger in Visual Studio. Is there the option to watch a variable and break execution whenever the variable changes? Again, can someone point me to the correct spot in the documentation?

Thank you.
_________________
Regards,
Bob

[PaulLaidler]

1) Basically DEBUG only plants code for navigating through the debugger whilst CHECK etc. add to this, code for checking for various faults at run time.

2) I am not sure what is available when using the Visual Studio plug-in but from the stand-alone debugger SDBG, you can set a "Use" break by right clicking on the variable in the "Variables" window.