segmentation fault due to "printf" ?

Hi everyone!

During a debug of an existing program, the following occurs :

Code:

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  printf( "blabla ", argv[1]) ; // argv[1] is the argument of 'main'
  ret=geo->load(argv[1]);

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now, at time of calling "printf" , the attribute "geo->source" is NULL, but after the call, the value has changed although the printf does not do anything with the object geo, leave alone its members.

After some more debugging, I have encountered this problem at other printf calls as well.

Could anyone tell me if I should go looking for a psychiatre or just don't use printf anymore?

Thanks!!!

You might give not using printf a try for a couple of weeks and then see the psychiatrist if it doesn't help. Also feel free to consult a psychic.

If argv[1] is non-null, I would say you are stomping your memory elsewhere.

shouldn't it be more like:

Code:

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printf("blabla  %s", argv[1]);

---

Shouldn't cause a seg-fault, but you should at least use printf correctly.

There is somethig called "undefined behaviour". It should be "random behaviour". Even better "I am messing with your brain behaviour".
For your own good, don't overthink why the screen gives you these weird results. There is an error with your program. Most likely something is causing an undefined behaviour and you mess your memory.

Post more code to spot the problem.