https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87226
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Akira Takahashi from comment #0)
> #include <iostream>
> #include <filesystem>
> #include <fstream>
>
> namespace fs = std::filesystem;
>
> int main()
> {
> fs::create_directory("dir_a");
> std::ofstream{"dir_a/a.txt"};
>
> fs::create_directory("dir_b");
> std::ofstream{"dir_b/b.txt"};
> fs::create_directory_symlink("dir_a", "dir_b/dir_a");
This creates a symlink in dir_b that points to itself.
> for (const fs::directory_entry& x : fs::recursive_directory_iterator(
> "dir_b",
>
> fs::directory_options::follow_directory_symlink)) {
> std::cout << x.path() << std::endl;
> }
> }
>
> expected result:
> "dir_b/b.txt"
> "dir_b/dir_a"
> "dir_b/dir_a/a.txt"
No, because you've created a broken symlink. dir_b/dir_a cannot be followed.
You can confirm that with /bin/ls
$ /bin/ls -R -1 dir_b
dir_b:
b.txt dir_a
Which matches your results:
>
> actual result:
> "dir_b/b.txt"
> "dir_b/dir_a"
You probably meant to do:
fs::create_directory_symlink("../dir_a", "dir_b/dir_a");
Then the result is:
"dir_b/dir_a"
"dir_b/dir_a/a.txt"
"dir_b/b.txt"
