Question about C4.5 code bug

[chenxi]

hello, everyone, I am a newbie here.

I downloaded the C4.5 code from web, and it works fine with me. But when I use it to treat large data, it has error message like "segmentation fault". While, I think it is not due to the volumn of data. Is that a bug?

so what is the general problem of "segmentation fault"?

Thank you so much!

[kingluke]

Errors of this kind usually appear when the program attempts to create data arrays larger than the 'compiled in' memory space of the program. A segmentation fault occurs when a program tries to access an invalid, or illegal memory address. Please post the code, and then we can see what the specific nature of the problem. I would suggest that there needs to be a call to malloc() at some point in the program to allow run-time creation of large datasets. However, without actually seeing what is going on in the sourcecode, I don't think we can help.

[chenxi]

Hi, thank you! The code can be downloaded by google C4.5 code, sorry I cannot post url currently.
Yes, I think it is the memory problem, but I don't know how to fix it, thank you!