https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94900
Bug ID: 94900
Summary: filesystem recursive_directory_iterator incorrectly
skips entries in case directories can not be read
Product: gcc
Version: 9.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: tonvandenheuvel at gmail dot com
Target Milestone: ---
Suppose we have a subdirectory `x` with two other subdirectories `a` and `b`,
both unreadable for the current user:
$ mkdir -p x/a x/b && chmod 000 x/a x/b
Then, the following program will only print one of the two directories:
#include <filesystem>
#include <iostream>
namespace sfs = std::filesystem;
int main(int argc, char** argv)
{
std::error_code ec;
for (sfs::recursive_directory_iterator it{"x"}; it !=
sfs::recursive_directory_iterator();
it.increment(ec))
{
std::cout << *it << '\n';
}
return 0;
}
On my system, it outputs:
"x/b"
Using a `directory_iterator` instead does print both directories, as expected.
