Question: Why might the following code segfault? Add some code to make sure it returns -1 rather than segfaults. int aValue = 12; int* ptr =

Why might the following code segfault? Add some code to make sure it returns -1 rather than segfaults.

int aValue = 12;

int* ptr = (int*)malloc(4 * sizeof(int));

*ptr = aValue;

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