我遇到一个问题，即我遇到阀门错误：有条件的跳跃或移动取决于非初始化的值。我正在使用自定义draw_sprite_to_buffer函数，该功能将像素数据从精灵的缓冲区复制到我的主缓冲区。

Question

t_sprite    *new_sprite(void *mlx, char *filepath)
{
    t_sprite    *tmp;

    tmp = malloc(sizeof(t_sprite));
    if (!tmp)
        return (NULL);
    tmp->img_ptr = mlx_xpm_file_to_image(mlx, filepath, &tmp->width, &tmp->height);
    if (!tmp->img_ptr)
        return (NULL);
    tmp->buffer = mlx_get_data_addr(tmp->img_ptr, &tmp->bpp, &tmp->line_len, &tmp->endian);
    if (!tmp->buffer)
        return (NULL);
    return (tmp);
}

==73326== Conditional jump or move depends on uninitialised value(s)
==73326==    at 0x10F294: draw_sprite_to_buffer (sprite.c:34)
==73326==    by 0x10F1C8: render (render.c:55)
==73326==    by 0x10EB28: game_loop (game.c:45)
==73326==    by 0x110494: mlx_loop (in /home/nahil/42Cursus/so_long/game_test)
==73326==    by 0x10E9D7: main (main.c:33)
==73326==  Uninitialised value was created by a heap allocation
==73326==    at 0x4846828: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==73326==    by 0x111152: mlx_int_parse_xpm (in /home/nahil/42Cursus/so_long/game_test)
==73326==    by 0x1117F3: mlx_xpm_file_to_image (in /home/nahil/42Cursus/so_long/game_test)
==73326==    by 0x10F360: new_sprite (sprite.c:53)
==73326==    by 0x10EC1E: init_player (player.c:23)
==73326==    by 0x10EE11: init_level (level.c:63)
==73326==    by 0x10EB57: init_game (game.c:52)
==73326==    by 0x10E9CB: main (main.c:32)

我尝试搜索具有类似问题的帖子，但是我发现的每个解决方案都不同。
thanks

花时间阅读此书！

这里是关键修复的简明摘要：fixes for

Valgrind: Conditional jump or move depends on uninitialized value(s)

：

估算缓冲液在

Answer 1

：

中

if (!tmp->buffer) {
    mlx_destroy_image(mlx, tmp->img_ptr);
    free(tmp);
    return (NULL);
}

1. add范围在draw_sprite_to_buffer

   中检查：

if ((x + x_offset) < 0 || (x + x_offset) >= buffer->width || 
    (y + y_offset) < 0 || (y + y_offset) >= buffer->height) {
    continue;
}

2. 检查透明像素的检查：

   确保正确处理透明度颜色（

   0xFF000000）。测试在提取之前是否有效。
wer verify图像文件完整性：

确保XPM文件正确初始化。调试使用：

3. color

   错误的错误记忆： 释放

   sprite->buffer

   if (!sprite->buffer) {
       printf("Buffer not initialized!\n");
   }
   

   未能避免泄漏时销毁。

这些修复程序并与valgrind进行重新检查。