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This patch implements the <filesystem> header and uses that
to provide <experimental/filesystem>.
Unlike other standard headers, the symbols needed for <filesystem>
have not yet been placed in libc++.so. Instead they live in the
new libc++fs.a library. Users of filesystem are required to link this
library. (Also note that libc++experimental no longer contains the
definition of <experimental/filesystem>, which now requires linking libc++fs).
The reason for keeping <filesystem> out of the dylib for now is that
it's still somewhat experimental, and the possibility of requiring an
ABI breaking change is very real. In the future the symbols will likely
be moved into the dylib, or the dylib will be made to link libc++fs automagically).
Note that moving the symbols out of libc++experimental may break user builds
until they update to -lc++fs. This should be OK, because the experimental
library provides no stability guarantees. However, I plan on looking into
ways we can force libc++experimental to automagically link libc++fs.
In order to use a single implementation and set of tests for <filesystem>, it
has been placed in a special `__fs` namespace. This namespace is inline in
C++17 onward, but not before that. As such implementation is available
in C++11 onward, but no filesystem namespace is present "directly", and
as such name conflicts shouldn't occur in C++11 or C++14.
llvm-svn: 338093
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As I move towards implementing std::filesystem, there is a need to
make the existing tests run against both the std and experimental versions.
Additionally, it's helpful to allow running the tests against other
implementations of filesystem.
This patch converts the test to easily target either. First, it
adds a filesystem_include.hpp header which is soley responsible
for selecting and including the correct implementation. Second,
it converts existing tests to use this header instead of including
filesystem directly.
llvm-svn: 328475
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llvm-svn: 288557
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This patch fixes the following bugs, all of which were discovered while
testing a 32 bit build on a 64 bit machine.
* path.itr/iterator.pass.cpp has undefined behavior.
'path::iterator' stashes the value of the element inside the iterator.
This violates the BiDirIterator requirements but is allowed for path::iterator.
However this means that using reverse_iterator<path::iterator> has undefined
behavior because it assumes that 'Iter tmp = it; return *tmp' will not create
a dangling reference. However it does, and this caused this particular test
to fail.
* path.native.obs/string_alloc.pass.cpp tested the SSO with a long string.
On 32 bit builds std::wstring only has the SSO for strings of size 2. The
test was using a string of size 4.
* fs.op.space/space.pass.cpp had overflows while calculating the expected values.
The fix here is to convert the statvfs data members to std::uintmax_t before
multiplying them. The internal implementation already does this but the tests
needed to do it as well.
llvm-svn: 273078
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Currently 4 tests are failing on the ARM buildbot. To try and diagnose each
of the failures this patch does the following:
1) path.itr/iterator.pass.cpp
* Temporarily print iteration sequence to see where its failing.
2) path.native.obs/string_alloc.pass.cpp
* Remove test that ::new is not called when constructing a short string
that requires a conversion. Since during the conversion global locale
objects might be constructed.
3) fs.op.funcs/space.pass.cpp
* Explicitly use uintmax_t in the implementation of space, hopefully
preventing possible overflows.
* Add additional tests that check for overflow is the calculation of the
space_info values.
* Add additional tests for the values returned from statfvs.
4) fs.op.funcs/last_write_time.pass.cpp
* No changes made yet.
llvm-svn: 273075
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llvm-svn: 273072
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Add the completed std::experimental::filesystem implementation and tests.
The implementation supports C++11 or newer.
The TS is built as part of 'libc++experimental.a'. Users of the TS need to
manually link this library. Building and testing the TS can be disabled using
the CMake option '-DLIBCXX_ENABLE_FILESYSTEM=OFF'.
Currently 'libc++experimental.a' is not installed by default. To turn on the
installation of the library use '-DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=ON'.
llvm-svn: 273034
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