Passing big multi-dimensional array to function in C

Posted by kirbuchi on Stack Overflow See other posts from Stack Overflow or by kirbuchi
Published on 2010-05-27T22:42:17Z Indexed on 2010/05/27 22:51 UTC
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Hi, I'm having trouble passing a big array to a function in C.

I declare:

int image[height][width][3]={};

where height and width can be as big as 1500. And when I call:

foo((void *)image,height,width);

which is declared as follows:

int *foo(const int *inputImage, int h, int w);

I get segmentation fault error. What's strange is that if my values are:

height=1200;
width=290;

theres no problem, but when they're:

height=1200;
width=291;

i get the mentioned error. At 4 bytes per integer with both height and width of 1500 (absolute worst case) the array size would be of 27MB which imo isn't that big and shouldn't really matter because I'm only passing a pointer to the first element of the array. Any advice?

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