Filesystem Release History
file_status and associated enums and functions to
- Deprecated: For backward compatibility
operations.hpp still includes the new headers
BOOST_FILESYSTEM_NO_DEPRECATED macro is defined. These implicit includes are considered deprecated and will be removed in a future release. Users are encouraged to include the new headers directly or include
filesystem_error exception is now implemented in the compiled library of Boost.Filesystem. Users may need to add linking with Boost.Filesystem library in their projects.
- On POSIX.1-2008 platforms, use
utimensat instead of
utime is declared obsolete in POSIX.1-2008 and can be disabled e.g. in uClibc-ng. (PR#115)
directory_iterator is now left in the end state on memory allocation errors.
directory_iterator on POSIX systems, support for
readdir_r has been reworked to avoid memory allocations for
dirent structures when
readdir is used. This reduces memory consumption and eliminates the possibility of buffer overruns in case if
readdir produces a very long directory name.
- On Windows, use Boost.WinAPI to select the target Windows version.
- New: Added
directory_options enum, which reflects the same named enum from C++20. The enum is supported in
recursive_directory_iterator to customize iteration behavior. In particular, the iterators now support skipping directories that can't be opened due to insufficient permissions. The
symlink_option enum is now deprecated and should be replaced with
- By default,
recursive_directory_iterator is now reset to the end state in case of errors, as required by C++20. (#112)
- New: Added
directory_options::pop_on_error option, which configures
recursive_directory_iterator so that it attempts to recover from iteration errors by repeatedly invoking
pop() until it succeeds or the end state is reached. (#113)
- New: Added
directory_options::skip_dangling_symlinks option, which configures
recursive_directory_iterator so that it doesn't follow dangling directory symlinks and continues iteration instead of reporting an error.
- Deprecated: The following members of
recursive_directory_iterator are now marked as deprecated:
no_push(). Users are advised to replace their use with the standard counterparts:
disable_recursion_pending(). Note that
recursion_pending() has the opposite meaning compared to
no_push_request(). Deprecated methods will be removed in a future release.
path::lexically_relative (and any dependent algorithms) to correctly handle empty, dot and dot-dot path elements in its argument. The behavior is made closer to C++17
std::path::lexically_relative in that empty and dot path elements are ignored and dot-dot path elements are accounted by decreasing the number of dot-dot path elements to generate in the resulting relative path. (#76)
- New: Added minimal support for CMake. (PR#106)
- Fixed incorrect
error_code returned from directory iterator increment when
readdir_r is used.
path, fixed rvalue-aware
operator/ return type to return an rvalue instead of rvalue reference. This fixes leaving a dangling reference in the user's code if the result of
operator/ is bound to a const reference. (#110)
- Fixes for better compatibility with Windows CE. (PR#24)
- New: Added support for movability to directory iterators.
- New: Added file status query overloads for directory_entry. This avoids a relatively expensive OS query when file status is requested for a result of dereferencing a directory iterator. (PR#55)
- Fixed a few instances of dereferencing
std::string::end() in path implementation.
- Fixed program termination in case of out of memory condition in directory iterators constructors and operations accepting a reference to
- Fixed possible linking errors caused by missing definitions of static members of
- Fixed possible use of uninitialized data in directory iterator increment operation on Linux. (#97)
read_symlink implementation to avoid possible memory exhaustion on broken or tampered with filesystems. The functions now have an internal limit of the path size they will accept from the OS, which is currently 16 MiB.
- Increased the size of the internal buffer used by
- Don't use
readdir_r on Linux and Android since the
readdir function is already thread-safe. (PR#68,
- Fixed crashes in
boost::filesystem::copy due to undefined behavior in the implementation. (PR#71)
- Fixed undefined behavior in
boost::filesystem::directory_iterator implementation. (PR#77)
- Fixed compilation errors when using directory iterators with
- Removed workarounds for older PGI C++ compiler versions to fix compilation on the newer ones. (PR#49)
- Fixed MSVC warnings about narrowing conversions. (PR#44)
- Fix static initialization issue that caused a crash if path operations were used before main(). (PR#62,
PR#43, PR#50, PR#59)
- Clean up some tutorial example code and fix the wording for it in the
tutorial. Thanks to Anmol-Singh-Jaggi for pull request #11.
should not throw on error. Thanks to ldqrk for pull request #42
- Fix #10731 and
path.extension only once. Thanks to Daniel Krügler for pull request #41.
- Fix error propagation in
space(p, ec). Thanks to cmuellner
for pull request #39.
- Add test/config_info.cpp to increase macro state reporting in hopes of
easing debugging on remote machines.
operations_test failure on MinGW: MinGW defines
__MINGW32__ rather than _MSC_VER, so also test for __MINGW32__ to see if
setenv/unsetenv workaround needed.
generic() function name: The undocumented experimental class
path member function
generic() has been renamed
gives problems in C++/CLI. Unless the macro BOOST_FILESYSTEM_NO_DEPRECATED
is defined, the original
generic() will continue to be supplied
as a workaround for existing user code. But
deprecated. User code should migrate to the new name.
- New: Class
path adds constexpr constants
dot of the type appropriate for the
platform, and adds query functions
These add convenience and the implementations may be more efficient that user
coded equivalent functions.
- Fix #12578,
Make directory iterators able to detect when a copy has advanced to the end.
This bug in
recursive_directory_iterator equality testing has existed more than a
dozen years. Nowadays test driven development would likely have detected the
problem in early development. Sigh.
- Fix #12495,
create_directories() crashes when passed empty string as path,
from Samantha Ritter. Also affected
Olivi submitted a pull request with some particularly helpful test cases.
- Fix #7307,
remove_all(dirname,ec) throws on write protected directories. This is a
tough one to test. There are three internal function calls where errors might
arise, and it would take too much time to write tests for each of those cases.
Someday we will have Titus Winter's mock installable file system, but for now
are relying on code inspection rather than testing.
- Fix a cygwin warning and a cygwin error. Thanks to thtrummer for pull
- Fixed two broken links in reference docs. Thanks to tbeu for pull
- Fix reference doc signatures for
path stem(), extension()
member functions. Thanks to faithandbrave for pull request #31
- Fix broken link to #7506 in 1.60.0 Release History (Daniel Krügler).
push_directory()internal logic so it is easier to
New: Added functions
weakly_canonical. Many thanks to Jamie Allsop for his help and
perseverance. Resolves tickets
- New: Class
path now has
- New: C++11
noexcept supplied as specified in the
Filesystem TS if supported by the compiler.
- New: C++11 move constructors and move assignments supplied as
specified in the Filesystem TS if supported by the compiler. Resolves
- New: Existing functions whose names changed in the Filesystem TS
are now supported under both the old and new names.
- New: Added
function to class
should have a size() member function.
- Clear several spurious GCC warnings.
- Fix #11733,
Missing unistd.h include in boost/libs/filesystem/src/unique_path.cpp by
apply a patch from Idar Tollefsen.
- Fix a race condition in
unique_path by applying
pull request #15
from Sebastian Redl. Also fixes
unique_path Fails on Windows for Temporary User
- Fix bug in
recursive_directory_iterator: C++ turns an explicit constructor
with all arguments except first defaulted into non-explicit single argument
- Fix #10591,
boost::filesystem does not build on iOS 8, by applying a patch submitted
by Daniel Seither.
- Fix #9454,
Boost Filesystem [library build] not compiling when
BOOST_FILESYSTEM_NO_DEPRECATED is defined, by applying a patch submitted
- Fix #11447,
__OpenBSD__ macro name misspelled, by applying a patch submitted by Jasper
A patch to avoid redundant string allocations,
by applying a patch submitted by Yevhen Ivannikov.
- Fix #11175,
out-of-date documentation causing users to incorrectly expect that the library
could be used with exceptions disabled.
- Resolve #11166
by mitigating (i.e. reducing the likelihood of) a possible external file
system race in
create_directories returns false if the path ends with a slash.
Also fix related issues if path contains dot or dot-dot
elements, and added test cases to the test suite.
Reference docs editorial cleanups: Use same style sheet as the
rest of the documentation. Tweak tab font size. Fix excessively long lines in
#10766, parent_path() with redundant separator returns wrong value,
by adding examples and notes to the reference documentation to show why the
returned value is in fact correct, and to provide rationale for that behavior.
See [path.itr], and
filename() sections of the reference
- Minor other fixes, including pull requests from Jonathan Wakely and Marcel
- Closed several tickets as duplicates or otherwise resolved by the
- #7607, path
should not infer an invisible "." at the end of a path that ends with a slash;
impossible to traverse the path of the reverse iterator, is effectively
resolved by the addition of the class
path reverse iteration
feature. The reference documentation has also been updated with
a note warning about the
limitations of class
- Update the Tutorial:
- Use C++11 in the example programs to improve clarity.
- Update the example source code show to match the actual example source
code in the cpp files.
- Rerun all the examples and update the output shown in the tutorial
- Fix spacing and other HTML presentation issues.
- Fix #11491,
temp_directory_path() doesn't return valid temp path on Android.
- Fix #6124,
pass a BOOST_SCOPED_ENUM to a compiled function because it will result in an
undefined reference if the library is compiled with -std=c++0x but the use is
compiled in C++03 mode, or visa versa.
- Rewrite Windows implementation of
temp_directory_path() to (1) avoid
GetTempPath() failure if path length > 130 (ticket #5300) and (2) provide a
more sensible sequence of directories than provided by
boost list discussion "[filesystem] temp_directory_path() behavior on
Windows". The new sequence is:
- Rework class
path locale and codecvt implementation for increased reliability.
This change was SVN revision 83021, which should have gone into 1.56.0 but
unfortunately the merge didn't happen until too late.
- Fix tickets #8930, #9054,
related to locales and codecvt facets.
- The net effect of the above changes and fixes should be to eliminate
spurious "locale::facet::_S_create_c_locale name not valid" errors on Linux
and other non-BSD POSIX-like systems. The error will continue to occur, as it
should, when a path encoding conversion char-to-wchar_t or wchar_t-to-char is
attempted in an environment without a valid C locale (for example, if the LANG
environment variable is invalid or not defined).
- Fix #6124,
#10038 - an
undefined reference that occurred when the library was compiled for C++03 but
the using program was compiled for C++11, or vice versa. The private library
interface has been changed to use a plain-old C++03 enum. This is the fix
suggested by Andy in 6779.
- The Windows implementation now treats NTFS directory junctions (also known
as junctions, also known as mount points) as symlinks. This has the effect of
treating directory junctions as directories, and thus supporting all
operations suitable for directories. This resolves
junctions are very similar to symlinks, but may have performance or other
advantages in some situations. They can be created from the command line with
mklink /j link target". There is no plan for Boost.Filesystem to
be able to create them directly other than by calling
recursive_directory_iterator::increment, adding an
invariant that progress is always made, even if an error is reported by
exception or error_code. Add a manually executed test,
test/issues/recurse_dir_iter_5403.cpp. Adjust regular regression tests
as needed. Thanks to Claudio Bley for the
pull request - the
change was incorporated into the reorganized code. Fixes
canonical() to treat parent of root as root. (Christian
Hammerl) Fixes #9683
- Added missing test for
__sun macro which is defined on
Solaris 10. (Chris Stylianou)
- Minor fixes and code cleanup.
- Update IDE projects to Visual Studio 2013.
- Remove unused
const char colon to clear clang warning. (J?gen
- Add BOOST_NOEXCEPT to
absolute values to quiet intellisense warnings, and conform to C++11.
with portable code that is intended to be much more robust and maintainable. A
section on path usage concerns has
been added to the reference documentation describing several concerns that
arise in the context of multithreading and
- Fix #7239, Stack
overflow when calling
create_directories(":D"). The reported
problem was a symptom of an internal bug that caused
path::parent_path() to fail on Windows for
and that in turn caused other functions that depend on
parent_path() to fail, such as
- Add begin() and end() non-member functions for directory_iterator and
recursive_directory_iterator so that C++11 range-based for statements work.
Suggested by feature requests
#6521, using the
- Add range_begin() and range_end() non-member functions for directory_iterator and
recursive_directory_iterator so that
- Fix a Linux fchmodat problem affecting symlink permissions reported during
discussion of #6659.
- Fix #6659 and
supported only on Solaris 11. Fix for both Sun and GCC compilers.
- Remove Filesystem Version 2 from the distribution. Version 3 is now the
only distributed version. Those still using V2 are urged to migrate to V3 as
soon as possible.
constexpr value_type preferred_separator to class path.
- Fix #5118,
replace_extension doesn't work as specified in documentation. The
documentation, implementation, and test cases have all had fixes applied. The
documentation had failed to mention that any existing extension is removed.
The behavior for simple cases has been reverted to the Version 2 behavior, but
with corrections so that complex replacements now work. Two test cases from
#5118 have been added.
- Fix #3737,
Boost.Filesystem does not compile on Windows Mobile. On Windows, <sys/stat.h>
is no longer included.
- Fix #4065,
Boost Filesystem lexicographic path comparison inconsistent. This required
multiple source code bug fixes and code cleanup, correcting problems not
related to lexicographical issues.
- Add class path member function
compare for consistency with
- Tighten BOOST_FILESYSTEM_DYN_LINK and BOOST_FILESYSTEM_STATIC_LINK logic
in filesystem/config.hpp so that one or the other is always defined, and both
being defined is a #error.
- Fix #6690 and
static linking related problems with VC++ 8 through 11. Note that this fix may
reintroduce codecvt thread safety problems
#6320, for these
compilers if static linking is used.
- Add path::operator+= and concat functions to tack on things like suffixes
or numbers. Suggested by Ed Smith-Rowland and others.
- Fix #6809,
Implementation of filesystem::rename() method for MS Windows is wrong, by
adding MOVEFILE_COPY_ALLOWED to deal with renames across drives, volumes, file
systems. Fix has no effect on non-Windows systems.
- Fix #6819, A path operand with a source that was a one character array was
treated as empty, even if it wasn't empty. Such arrays can occur in unions or
in code using C variable length array idioms.
- Fix #6932,
create_directories throws exception even if error_code is specified.
- Fix #3714,
Added test cases and fixes for class path errors when assignment or append
used self or portion of self as source.
- Fix #4889,
#6320, Locale codecvt_facet not thread safe on Windows. Move
Windows, Mac OS X, locale and codecvt facet back to namespace scope. POSIX
except OS X uses local static initialization (IE lazy) to ensure exceptions
are catchable if environmental variables are misconfigured and to avoid use of
locale("") if not actually used.
- Fix #5652,
recursive_directory_iterator fails on cyclic symbolic links. Thanks to Daniel Aarno for the patch.
- Fix #5653,
recursive_directory_iterator(error_code) can still throw filesystem_error.
- Fix #5900, directory_iterator
access violation on Windows if error is thrown. Thanks to Andreas Eckleder for the patch.
- Fix #5900
comment 2, a bug in director_iterator construction with error_code argument that
caused increment to be called without the ec argument being passed.
- Fix #5989 by cleaning up test suite path_test.cpp code even
though the ticket itself was not a defect, and clarifying docs; iteration over a path yields
- Fix #5592, Change Windows codecvt processing from CP_THREAD_ACP to CP_ACP.
- Operations function fixes for PGI compiler, thanks to Noel Belcourt.
- Relax permissions test to reflect reality, particularly on the Sandia test
- Added operational function canonical(),
suggested by David Svoboda, who also provided pseudo-code.
- Added hash_value() function for
paths. (Daniel James)
- Fix path inserter problem (#5764)
reported for QNX6.3.2 host (gcc-3.3.5)
- Fix problem of locale("") exception being thrown before main() starts on
poorly configured (e.g. LANG="bad name") POSIX systems. Resolves the most
serious aspect of tickets
- Program file_status.cpp added (V3). See boost-root/libs/filesystem/v3/example.
Useful both as an example and to explore how Boost.Filesystem treats various
status errors. Run "bjam" (NOT "bjam install") in the example directory
to install in example/bin.
- Fix fstream problem for STLPort masquerading as Dinkumware (#5217).
- Version 3 of the library is now the default.
- IBM vacpp: Workaround for compiler bug affecting iterator_facade. (#4912)
- Verify, clarify, document that <boost/config/user.hpp> can be used to
specify BOOST_FILESYSTEM_VERSION. (#4891)
- Replaced C-style assert with BOOST_ASSERT.
- Undeprecated unique_path(). Instead, add a note mentioning the workaround
for lack of thread safety and possible change to cwd. unique_path() is just
too convenient to deprecate!
- Cleared several GCC warnings.
- Changed V2 code to use BOOST_THROW_EXCEPTION.
- Windows: Fix status() to report non-symlink reparse point correctly.
allowing control over recursion into directory symlinks. Note that the default
is changed to not recurse into directory symlinks.
- Reference documentation cleanup, including
fixing missing and broken links, and adding missing functions.
- Miscellaneous implementation code cleanup.
07 August, 2017
© Copyright Beman Dawes, 2011
Use, modification, and distribution are subject to the Boost Software
License, Version 1.0. See