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This meets the requirement that std::is_integral_v<wchar_t> is true, even when full library support for wchar_t via specializations of char_traits etc. is not provided. This is done by checking __WCHAR_TYPE__ to see if the compiler knows about the type, rather than checking the library's own _GLIBCXX_USE_WCHAR_T autoconf macro. This assumes that the C++ compiler correctly defines wchar_t as a distinct type, not a typedef for one of the other integeral types. This is always true for G++ and should be true for any supported non-GNU compilers. Similarly, the std::make_unsigned and std::make_signed traits and the internal helpers std::__is_integer and std::__is_char are also changed to depend on the same macro. libstdc++-v3/ChangeLog: * include/std/type_traits (is_integral<wchar_t>) (make_unsigned<wchar_t>, make_signed<wchar_t>): Define based on #ifdef __WCHAR_TYPE__ instead of _GLIBCXX_USE_WCHAR_T. * include/bits/cpp_type_traits.h (__is_integer<wchar_t>) (__is_char<wchar_t>): Likewise. |
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| .. | ||
| config | ||
| doc | ||
| include | ||
| libsupc++ | ||
| po | ||
| python | ||
| scripts | ||
| src | ||
| testsuite | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| ChangeLog | ||
| ChangeLog-1998 | ||
| ChangeLog-1999 | ||
| ChangeLog-2000 | ||
| ChangeLog-2001 | ||
| ChangeLog-2002 | ||
| ChangeLog-2003 | ||
| ChangeLog-2004 | ||
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| ChangeLog-2006 | ||
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| ChangeLog-2012 | ||
| ChangeLog-2013 | ||
| ChangeLog-2014 | ||
| ChangeLog-2015 | ||
| ChangeLog-2016 | ||
| ChangeLog-2017 | ||
| ChangeLog-2018 | ||
| ChangeLog-2019 | ||
| config.h.in | ||
| configure | ||
| configure.ac | ||
| configure.host | ||
| crossconfig.m4 | ||
| fragment.am | ||
| linkage.m4 | ||
| Makefile.am | ||
| Makefile.in | ||
| README | ||
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.