从队列弹出时C中的分段错误

Question

I am facing a problem and I tried to debug it but I couldn't find anything

#include <stdio.h>
#include <stdlib.h>

struct Process {
    int id;
    int at;
    int bt;
    int rt;
    struct Process *next;
} *tmp;

struct Queue {
    struct Process *head, *tail;
};

struct Process *pop(struct Queue *queue) {
    if (queue->head == NULL) {
        return NULL;
    }
    tmp = queue->head;
    queue->head = queue->head->next;
    return tmp;
}

int main() {
    struct Queue queues[3];
    struct Process *working;
    for (int i = 0; i < 3; i++) {
        queues[i].head = NULL;
    }
    FILE *processesFile = fopen("processes.txt", "r");
    while (!feof(processesFile)) {
        fscanf(processesFile, "%d %d %d", &id, &at, &bt);
        push(&queues[0], id, at, bt);
    }
    working = pop(&queues[0]); // HERE IS THE PROBLEM, It is removing the first element but causing segmentation error
    return 0;
}

I removed the pushing part, I could successfully push 5 values and print the whole queue without any problems

Answer 1

I dont see the definition for push(&queues[0], id, at, bt);. fscanf(processesFile, "%d %d %d", &id, &at, &bt); here the variables id,at and bt are used but they are not actually accessed as structure variables.