how to deal with Segmentation fault in dynamically allocated struct C - c

Question

I have written a program that reads in words from a text file. There is one word per line. I need to find how many times each word repeats. To find this out so far i have read the words in from the file and placed them all in a dynamically allocated array of struct. My problem is that the program keeps segmentation faulting whenever i try to run it. I assume there is a problem with how i am dynamically allocating the data.
Code is as follows;
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
//struct
struct _data {
char *word;
int number;
};
//scan for size of file
int SCAN(FILE *data) {
int size = 0;
char s_temp[50];
while (1) {
fscanf(data, "%s", s_temp);
if (feof(data)) break;
size++;
}
return size;
}
//load content into struct
int LOAD(FILE *data, int size, struct _data *Wordstruct){
int i;
char temp[50];
for (i=0; i <size; i++){
fscanf(data, "%s", temp , &Wordstruct[i].word, &Wordstruct[i].number);
Wordstruct[i].word =calloc(strlen(temp), sizeof(char));
strcpy(Wordstruct[i].word, temp);
if(strcasecmp(Wordstruct[i].word, temp) ==0){
Wordstruct[i].number++;
}
}
return size;
}
//count how many times each word repeats
void COUNT(struct _data *Wordstruct, int size){
int i;
int count;
count =0;
char *word;
if (strcasecmp(Wordstruct[i].word, word)==0){
count++;
for(i=0; i<size; i++){
printf("%s\n",Wordstruct[i].word,"occurs:\t",count);
}
}
}
//main routine
int main(int argc, char *argv[]){
int size;
FILE *data;
struct _data *Wordlist;
if(argc <2){
printf("Not enough arguments\n");
}
else{
FILE *data= fopen(argv[1],"r");
size =SCAN(data);
LOAD(data, size, Wordlist);
COUNT(Wordlist, size);
}
return 0;
}

Answer 1

You haven't allocated memory for Wordlist. Add
Wordlist = malloc(size*sizeof(*Wordlist));
before the call to LOAD.
And, as pointed out by #BLUEPIXY in comments, change
Wordstruct[i].word =calloc(strlen(temp), sizeof(char));
to
Wordstruct[i].word =calloc(strlen(temp)+1, sizeof(char));

Answer 2

Change this:
Wordstruct[i].word =calloc(strlen(temp), sizeof(char));
To this:
Wordstruct[i].word =calloc(strlen(temp)+1, sizeof(char));
You need to account for NULL terminator, strlen() does not do that for you here.