停止printf打印两次在C中运行检查框架？

1. 大概深入地解释在c和c线程中如何进行打印将可以解决该问题
2. 在任何时候都没有使用循环和scanf
3. 因为我的代码使用检查框架，所以我会假设正在进行一些分叉。
4. 最有可能与缓冲区有关，因此我正在使用fflush（stdout），以防万一是由于框架内的某些东西引起的，我希望知道框架的人会解释发生的事情。
5. 检查框架页面check.sourceforge.net
6. Git链接是否可以以某种方式帮助https://github.com/batousik/Practical-C2
7. 链接到构建/测试日志，在第438行，打印开始https://travis-ci.org/batousik/Practical-C2/builds/53513707

代码样例

START_TEST(test_START_EMPTY_TREE_TREEBASE_PRINT_FREETREE_TEST) {
    printf("_________START_EMPTY_TREE/TREEBASE_PRINT/FREETREE_TEST__________\n");
    fflush(stdout);

    int *ptr;
    for (int i = 0; i < arr_size; i++) {
        ptr = malloc(sizeof(int));
        memcpy(ptr, (int_arr_ptr + i), sizeof(int));
        insert(ptr_tree_base_int_1, ptr);
    }
    // should print tree
    printf("!!!Next lines has to be tree printed out\n");
    fflush(stdout);
    ck_assert_int_eq(printTree(ptr_tree_base_int_1), true);
    printf("_____________________\n");
    fflush(stdout);

    // No output
    ck_assert_int_eq(freeTree(ptr_tree_base_int_1), true);
    // should print cannot free empty tree
    printf("!!!Next line has to be:\"cannot free empty tree\"\n");
    fflush(stdout);
    ck_assert_int_eq(freeTree(ptr_tree_base_int_1), true);

    // should print cannot print empty tree
    printf("!!!Next line has to be:\"cannot print empty tree\"\n");
    fflush(stdout);
    ck_assert_int_eq(printTree(ptr_tree_base_int_1), false);
    printf("_____________________\n");
    fflush(stdout);

    ptr_tree_base_int_1 = NULL;
    free(ptr_tree_base_int_1);

    // should print cannot free empty tree base
    printf("!!!Next line has to be:\"cannot free empty tree base\"\n");
    fflush(stdout);
    ck_assert_int_eq(freeTree(ptr_tree_base_int_1), true);

    // should print cannot print empty tree base
    printf("!!!Next line has to be:\"cannot print empty tree base\"\n");
    fflush(stdout);
    ck_assert_int_eq(printTree(ptr_tree_base_int_1), false);
    printf("_____________________\n");
    fflush(stdout);

    free(int_arr_ptr);
    int_arr_ptr = NULL;
    printf("freeing the array...\n");
    fflush(stdout);
    printf("________END_____________\n");
    fflush(stdout);
    ck_assert_int_eq(ptr_tree_base_int_1->size, 0);
} END_TEST

PrintTree功能

bool printTree(TreeBase *tree){
void *previous = NULL;
int cnt_tasks = 0;
if (!tree) {
    printf("PRINT: Cannot print empty tree base\n");
    fflush(stdout);
    return false;
}
/* set current to root of binary tree */
TreeNode *current_node = tree->base;
if (!(tree->base)) {
    printf("PRINT: Cannot print empty tree\n");
    fflush(stdout);
    return false;
}
StackNode *stack = NULL;
while (true) {
    if(current_node) {
        push(&stack, current_node);
        current_node = current_node->left;
    } else {
        if (stack) {
            current_node = pop(&stack);
            if (cnt_tasks > 1) {
                if (tree->comp(previous, current_node->value) != -1) {
                    printf("PRINTTREE: Invalid BST\n");
                    fflush(stdout);
                    assert(NULL);
                }
            }
            previous = current_node->value;
            tree->print(current_node->value);
            cnt_tasks++;
            current_node = current_node->right;
        } else {
            return (cnt_tasks == tree->size);
        }
    }
}

}

树->打印功能

void print_ints(void *p){
   printf("%d\n", *(int*)p);
   fflush(stdout);
}

样品输出

    FREETREE: Cant free empty tree
    !!!Next line has to be:"cannot free empty tree"
    FREETREE: Cant free empty tree
    FREETREE: Cant free empty tree
    !!!Next line has to be:"cannot print empty tree"
    PRINT: Cannot print empty tree
    PRINT: Cannot print empty tree
    _____________________

那是很多代码，要点在!!!之后！应该有一行，但印有两行

    printf("PRINT: Cannot print empty tree\n");
    fflush(stdout);
    return false;

^^此行打印两次

提意见：什么是“宏”？这是从API

#define     ck_assert_int_eq(X, Y)   _ck_assert_int(X, ==, Y)