블록 내에서이 메모리 누수를 해결하는 방법은 무엇입니까?

다음과 같은 기능이 있습니다.

STUDENT *getStudents(size_t *numOfStudents){
  STUDENT *students=malloc(sizeof(STUDENT));
  if(students==NULL){
    fprintf(stderr,"Could not allocate memory. Aborting...\n");
    exit(-1);
  }

  FILE *data=fopen("in/data.txt","r");
  for(register size_t i=0;fscanf(data,"%"SCNd32" %"SCNd8,&students[i].num,&students[i].finalGrade)==2;i++){
    ++(*numOfStudents);
    {
      STUDENT *sTemp=realloc(students,*numOfStudents*sizeof(STUDENT));
      if(sTemp==NULL){
        fprintf(stderr,"Could not allocate memory. Aborting...\n");
        exit(-1);
      }
      students=sTemp;
    }
  }
  --(*numOfStudents);
  {
    STUDENT *sTemp=realloc(students,*numOfStudents*sizeof(STUDENT));
    if(sTemp==NULL){
      fprintf(stderr,"Could not allocate memory. Aborting...\n");
      exit(-1);
    }
    students=sTemp;
  }
  return students;
}

로 컴파일 -fsanitize=address하면 메모리 누수 감지

getStudents src / student.c : 27에서

다음 줄입니다.

STUDENT *sTemp=realloc(students,*numOfStudents*sizeof(STUDENT));

블록 안에 있기 때문에 자동으로 메모리를 해제 할 것이라고 생각했습니다. 해제를 시도한 후에도 동일한 문제가 발생합니다.

어떻게 해결할 수 있습니까?

편집하다:

int main(void){
  size_t numOfStudents=1;
  STUDENT *students=getStudents(&numOfStudents);
  printStudents(students,numOfStudents);
  printf("\n================\nMean: %f\n================\n\n",
    (float)getGradeSum(students,numOfStudents)/numOfStudents
  );
  students=removeFailed(students,&numOfStudents);
  printStudents(students,numOfStudents);
  getGradeSum(students,numOfStudents);
  free(students);
  return 0;
}

int32_t getGradeSum(STUDENT *students,size_t numOfStudents){
  if(numOfStudents==1){
    return students[0].finalGrade;
  }
  else{
    return students[numOfStudents-1].finalGrade+getGradeSum(students,numOfStudents-1);
  }
}