[PATCH] Five patches for std::experimental::filesystem

[Christophe Lyon]

Hi Jonathan,

On 25 October 2016 at 17:32, Jonathan Wakely <jwakely@redhat.com> wrote:
> Two more fixes for the filesystem TS, and improved tests.
>
>   Handle negative times in filesystem::last_write_time
>           * src/filesystem/ops.cc
>        (last_write_time(const path&, file_time_type, error_code&)): Handle
>        negative times correctly.
>        * testsuite/experimental/filesystem/operations/last_write_time.cc:
>        Test writing file times.
>
>    Fix error handling in copy_file and equivalent
>           * src/filesystem/ops.cc (do_copy_file): Report an error if source
> or
>        destination is not a regular file (LWG 2712).
>        (equivalent): Fix error handling and result when only one file
> exists.
>        * testsuite/experimental/filesystem/operations/copy.cc: Remove files
>        created by tests. Test copying directories.
>        * testsuite/experimental/filesystem/operations/copy_file.cc: Remove
>        files created by tests.
>        * testsuite/experimental/filesystem/operations/equivalent.cc: New.
>        * testsuite/experimental/filesystem/operations/is_empty.cc: New.
>        * testsuite/experimental/filesystem/operations/read_symlink.cc:
> Remove
>        file created by test.
>        * testsuite/experimental/filesystem/operations/remove_all.cc: New.
>        * testsuite/util/testsuite_fs.h (~scoped_file): Only try to remove
>        file if path is non-empty, to support removal by other means.
>
> Tested x86_64-linux, committed to trunk.
>
>
I can see failures in
experimental/filesystem/operations/last_write_time.cc after your
committed this patch:
/aci-gcc-fsf/sources/gcc-fsf/gccsrc/libstdc++-v3/testsuite/experimental/filesystem/operations/last_write_time.cc:127:
void test02(): Assertion 'last_write_time(f.path) == time' failed.
on arm*linux* and aarch64*linux* targets.

Christophe