boost::filesystem::current\u path()返回空路径

我有一个C++程序,我需要当前路径来创建一个文件夹。我的可执行文件的位置是 /home/me/foo/bin . 这就是我所说的:

//Here I expect '/home/me/foo/bin/', but get ''
auto currentPath = boost::filesystem::current_path(); 

//Here I expect '/home/me/foo/', but get ''
auto parentPath = currentPath.parent_path();

//Here I expect '/home/me/foo/foo2/', but get 'foo2/'
string subFolder    = "foo2";
string folderPath   = parentPath.string() + "/" + subFolder + "/";

//Here I expect to create '/home/me/foo/foo2/', but get a core dump
boost::filesystem::path boostPath{ folderPath};
boost::filesystem::create_directories( boostPath); 

我曾经在没有使用柯南的情况下,用以前版本的Boost(我相信是1.45)成功地运行过这个程序。我的机器上正常安装了Boost。我现在跑的时候堆芯掉了 create_directories( boostPath);

两个问题:

1. 为什么不呢 current_path() 为我提供实际路径,然后返回空路径?
2. 即使current_path()未返回任何内容,为什么即使使用 sudo ? 我不是简单地在根目录下创建文件夹吗?

编辑:

cout 上述变量的输出在两行之间,而不是使用调试模式, 提供以下输出:

currentPath: ""
parentPath: ""
folderPath: /foo2/
Segmentation fault (core dumped)

但是 有时

currentPath: "/"
parentPath: "/home/me/fooA�[oFw�[oFw@"
folderPath: /home/me/fooA�[oFw�[oFw@/foo2/
terminate called after throwing an instance of 'boost::filesystem::filesystem_error'
  what():  boost::filesystem::create_directories: Invalid argument
Aborted (core dumped)

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[settings]
os=Linux
os_build=Linux
arch=x86_64
arch_build=x86_64
compiler=gcc
compiler.version=5
compiler.libcxx=libstdc++
build_type=Release
[options]
[build_requires]
[env]