short arr[2][3] = {{1,2},{3,4},{5,6}};

short (*ptr) [] = arr; //illegal, atleast columns must be specified.

typedef struct{
   short (*ptr)[];
}sample_struct;

short arr[2][3] = {{1,2},{3,4},{5,6}};

sample_struct arrayOfStructs[1] = {{arr}};

cols = 3;
uint16_t (*other_ptr) [cols] = sample_struct->arr;