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For any typedef-name or template parameter, T, add_const_t<T> is equivalent to T const, so we can avoid instantiating the std::add_const class template and just say T const (or const T). This isn't true for a non-typedef like int&, where int& const would be ill-formed, but we shouldn't be using add_const_t<int&> anyway, because we know what that type is. The only place we need to continue using std::add_const is in the std::bind implementation where it's used as a template template parameter to be applied as a metafunction elsewhere. libstdc++-v3/ChangeLog: * include/bits/stl_iterator.h (__iter_to_alloc_t): Replace add_const_t with const-qualifier. * include/bits/utility.h (tuple_element<N, cv T>): Likewise for all cv-qualifiers. * include/std/type_traits (add_const, add_volatile): Replace typedef-declaration with using-declaration. (add_cv): Replace add_const and add_volatile with cv-qualifiers. * include/std/variant (variant_alternative<N, cv T>): Replace add_const_t, add_volatile_t and add_cv_t etc. with cv-qualifiers. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
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| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
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| compile | ||
| config-ml.in | ||
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| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
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| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
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| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
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| missing | ||
| mkdep | ||
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| test-driver | ||
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This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.