[Solved] Using realloc() on a Stack

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From the man page:

The realloc() function changes the size of the memory block pointed
to by ptr to size bytes.

So instead of:

int *newbuffer = (int*) realloc (stacky, size);

you probably want

int *newbuffer = (int*) realloc (stacky, size * sizeof(int));

BTW: No need for cast when using malloc and friends. See Do I cast the result of malloc?

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solved Using realloc() on a Stack