Facing error in LeetCode. The error is as follows:

Question

Line 9: Char 22: runtime error: store to address 0x7fff41648ec4 with insufficient space for an object of type 'int' [solution.c] 0x7fff41648ec4: note: pointer points here 01 00 00 00 70 60 00 00 c7 4f e5 06 29 7f 00 00 10 90 64 41 ff 7f 00 00 60 95 e8 06 29 7f 00 00 ^

Question: Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]).

Return the running sum of nums.

Example 1:

Input: nums = [1,2,3,4]
Output: [1,3,6,10]
Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4].
Example 2:

Input: nums = [1,1,1,1,1]
Output: [1,2,3,4,5]
Explanation: Running sum is obtained as follows: [1, 1+1, 1+1+1, 1+1+1+1, 1+1+1+1+1].
Example 3:

Input: nums = [3,1,2,10,1]
Output: [3,4,6,16,17]

My solution:

/**
 * Note: The returned array must be malloced, assume caller calls free().
 */
int* runningSum(int* nums, int numsSize, int* returnSize){
    if(numsSize>=1){
        returnSize[0]=nums[0];
    }
    for(int i=1;i<numsSize;i++){
        returnSize[i]=returnSize[i-1]+nums[i];
    }
    return returnSize;
}