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Editorial Team
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Asked: 2026-05-17T20:29:32+00:00

EDIT: Updated code with new Pastebin link but it’s still stopping at the info->citizens[x]->name

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EDIT: Updated code with new Pastebin link but it’s still stopping at the info->citizens[x]->name while loop. Added realloc to loops and tidied up the code. Any more comments would be greatly appreciated

I’m having a few problems with memory allocation overflowing

http://pastebin.com/vukRGkq9 (v2)

No matter what I try, simply not enough memory is being allocated for info->citizens and gdb is often saying that it cannot access info->citizens[x]->name.

On occasion, I’ll even get KERN_INVALID_ADDRESS errors directly after printf statements for strlen (Strlen is not used in the code at the point where gdb halts due to the error, but I’m assuming printf uses strlen in some way). I think it’s something to do with how the structure is being allocated memory. So I was wondering if anyone could take a look?

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1 Answer

  1. Editorial Team

    You shouldn’t do malloc(sizeof(PEOPLE*)), because it allocates exactly amount of bytes for pointer (4 bytes on 32bit arch).
    Seems the thing you want to do is malloc(sizeof(PEOPLE) * N) where N is the max. number of PEOPLE you want to put into that memory chunk.

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