6 Commits

Author	SHA1	Message	Date
Louis Dionne	c2df707666	[libc++] Suppress -Wctad-maybe-unsupported on types w/o deduction guides ... There are a handful of standard library types that are intended to support CTAD but don't need any explicit deduction guides to do so. This patch adds a dummy deduction guide to those types to suppress -Wctad-maybe-unsupported (which gets emitted in user code). This is a re-application of the original patch by Eric Fiselier in fcd549a7d8 which had been reverted due to reasons lost at this point. I also added the macro to a few more types. Reviving this patch was prompted by the discussion on https://llvm.org/D133425. Differential Revision: https://reviews.llvm.org/D133535	2022-10-03 14:05:08 -04:00
Louis Dionne	89a7bdb1f3	[libc++] Add the __bind_back and __compose helpers ... Those are going to be used to implement range adaptors, see D107098 for details. Differential Revision: https://reviews.llvm.org/D107785	2021-08-11 10:08:20 -04:00
Louis Dionne	ce96d81c47	[libc++][NFC] Simplify tests for bind_front	2021-08-10 11:57:51 -04:00
Louis Dionne	f599e7a789	[libc++] Refactor __perfect_forward, bind_front and not_fn ... This patch fixes the constrains on the __perfect_forward constructor and its call operators, which were incorrect. In particular, it makes sure that we closely follow [func.require], which basically says that we must deliver the bound arguments with the appropriate value category or make the call ill-formed, but not silently fall back to using a different value category. As a fly-by, this patch also: - Adds types __bind_front_t and __not_fn_t to make the result of calling bind_front and not_fn more opaque, and improve diagnostics for users. - Adds a bunch of tests for bind_front and remove some that are now redundant. - Adds some missing _LIBCPP_HIDE_FROM_ABI annotations. Immense thanks to @tcanens for raising awareness about this issue, and providing help with the = delete bits. Differential Revision: https://reviews.llvm.org/D107199	2021-08-09 15:32:00 -04:00
Louis Dionne	e35677c07c	[libc++] NFC: Remove unused c++98 Lit feature	2021-06-22 16:24:43 -04:00
zoecarver	84a50f5911	[libc++] Add bind_front function (P0356R5). ... Implementes [[ http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0356r5.html | P0356R5 ]]. Adds `bind_front` to `functional`. Reviewed By: ldionne, #libc, Quuxplusone Differential Revision: https://reviews.llvm.org/D60368	2021-03-02 16:18:06 -08:00