llvm-project.git/libcxx/test/std/strings/basic.string/string.nonmembers/string.io, branch main

[libc++] Optimize std::getline (#121346)

2025-05-19T08:59:36+00:00

```
-----------------------------------------------
Benchmark                   old             new
-----------------------------------------------
BM_getline_string        318 ns         32.4 ns
```

[libc++] Refactor string unit tests to ease addition of new allocators

2023-09-27T13:01:58+00:00

While doing this, I also found a few tests that were either clearly
incorrect (e.g. testing the wrong function) or that lacked basic test
coverage like testing std::string itself (e.g. the test was only checking
std::basic_string with a custom allocator). In these cases, I did a few
conservative drive-by changes.

Differential Revision: https://reviews.llvm.org/D140550
Co-authored-by: Brendan Emery

[libc++] Fix Lit config in `string.io`.

2023-09-01T21:37:15+00:00

This file was accidentally formatted by D140612, resulting in incorrect
syntax.

[libc++] Apply clang formatting to all string unit tests

2023-09-01T17:35:18+00:00

This applies clang-format to the std::string unit tests in preparation
for landing https://reviews.llvm.org/D140550.

Differential Revision: https://reviews.llvm.org/D140612

[NFC][Py Reformat] Reformat python files in libcxx/libcxxabi

2023-05-25T09:15:34+00:00

This is an ongoing series of commits that are reformatting our
Python code.

Reformatting is done with `black`.

If you end up having problems merging this commit because you
have made changes to a python file, the best way to handle that
is to run git checkout --ours  and then reformat it
with black.

If you run into any problems, post to discourse about it and
we will try to help.

RFC Thread below:

https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style

Reviewed By: #libc, kwk, Mordante

Differential Revision: https://reviews.llvm.org/D150763

[runtimes] Rename various libcpp-has-no-XYZ Lit features to just no-XYZ

2022-05-27T19:24:45+00:00

Since those features are general properties of the environment, it makes
sense to use them from libc++abi too, and so the name libcpp-has-no-xxx
doesn't make sense.

Differential Revision: https://reviews.llvm.org/D126482

[libc++] [test] Qualify calls to std::getline. NFCI.

2022-02-16T16:03:33+00:00

Reviewed as part of D119860.

[libc++] Add an option to disable wide character support in libc++

2021-10-12T10:08:23+00:00

Some embedded platforms do not wish to support the C library functionality
for handling wchar_t because they have no use for it. It makes sense for
libc++ to work properly on those platforms, so this commit adds a carve-out
of functionality for wchar_t.

Unfortunately, unlike some other carve-outs (e.g. random device), this
patch touches several parts of the library. However, despite the wide
impact of this patch, I still think it is important to support this
configuration since it makes it much simpler to port libc++ to some
embedded platforms.

Differential Revision: https://reviews.llvm.org/D111265

[libc++] Remove some _LIBCPP_CXX03_LANG from iostreams headers.

2021-06-28T16:55:26+00:00

With the STL containers, I didn't enable move operations in C++03 mode
because that would change the overload resolution for things that today
are copy operations. With iostreams, though, the copy operations aren't
present at all, and so I see no problem with enabling move operations
even in (Clang's greatly extended) C++03 mode.

Clang's C++03 mode does not support delegating constructors.

Differential Revision: https://reviews.llvm.org/D104310

[libc++] Add a libc++ configuration that does not support localization

2020-10-27T18:56:30+00:00

When porting libc++ to embedded systems, it can be useful to drop support
for localization, which these systems don't implement or care about.

Differential Revision: https://reviews.llvm.org/D90072