debugger problem with VC++ express

This is a discussion on debugger problem with VC++ express within the C++ Programming forums, part of the General Programming Boards category; Since i'm new to the board hello to everyone I'm pretty new to C++ and I've just started using Microsofts ...

  1. #1
    Registered User Frenzied's Avatar
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    debugger problem with VC++ express

    Since i'm new to the board hello to everyone

    I'm pretty new to C++ and I've just started using Microsofts Visual C++ express. I've just finished writing a program and thought i'd experiment with the debugger. When I tried to start it I got this dialog:

    'Debugging info for 'TurtleDraw.exe' cannot be found or does not match. Binary was not built with debug info. Do you want to continue debug?'

    I'm assuming I haven't set up VC++ properly or something. Can anyone tell me what I need to do?

    thanks

  2. #2
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    you have to compile for debug mode, not release mode. There should be a dialog box titled "Solutions Configuration" -- change it to Debug then recompile everything.

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    Registered User Frenzied's Avatar
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    Thanks, i'll go check that out.

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    FYI Frenzied,

    A normal EXE file doesn't contain any variable names, function names, line numbers, etc.

    So, the compiler can make a special EXE file and (somehow) keep track of how the lines & variables in the machine language EXE file relate-back to the lines & variables in your C++ language source file.

    And, there are "break-points" inserted into the machine code, so that execution can be "paused" and re-started. (I assume that the break-points are actually "do-nothing loops".)

  5. #5
    Registered User mrafcho001's Avatar
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    no its not a loop... it just halts the execution, and yes it inserts code into the exe which helps it monitor the variables and what line of code is being executed.
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  6. #6
    Registered User Frenzied's Avatar
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    I understand, so with release mode you just get the machine code which is the program I have just written, but with debug mode you get extra debugging machine code, is that right?

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    yes that is right -- and the debug .exe file will be at least twice the size of a program without debug info and it will run slower too. So programs compiled for debug are not something that one would want to give to someone else unless they also want it for debugging.

  8. #8
    Registered User mrafcho001's Avatar
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    also most of the time it wont even work, the debug .exes use extra dlls not found on the average user's computer.
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