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Jonathan Wakely 58487c21b6 PR c++/90532 Ensure __is_constructible(T[]) is false 
An array of an unknown bound is an incomplete type, so no object of such
a type can be constructed. This means __is_constructible should always
be false for an array of unknown bound.

This patch also changes the std::is_default_constructible trait to use
std::is_constructible, which now gives the right answer for arrays of
unknown bound.

gcc/cp:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* method.c (is_xible_helper): Return error_mark_node for construction
	of an array of unknown bound.

gcc/testsuite:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* g++.dg/ext/90532.C: New test.

libstdc++-v3:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* include/std/type_traits (__do_is_default_constructible_impl)
	(__is_default_constructible_atom, __is_default_constructible_safe):
	Remove.
	(is_default_constructible): Use is_constructible.
	* testsuite/20_util/is_constructible/value.cc: Check int[] case.
	* testsuite/20_util/is_default_constructible/value.cc: Likewise.
	* testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
	* testsuite/20_util/is_trivially_default_constructible/value.cc:
	Likewise.

From-SVN: r271412
2019-05-20 12:32:51 +01:00
..
config Remove obsolete Solaris 10 support 2019-05-14 17:17:23 +00:00
doc Add missing piece of P0777R1 and update C++20 status docs 2019-05-17 10:28:13 +01:00
include PR c++/90532 Ensure __is_constructible(T[]) is false 2019-05-20 12:32:51 +01:00
libsupc++ Remove obsolete Solaris 10 support 2019-05-14 17:17:23 +00:00
po PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
python PR libstdc++/90520 adjust Xmethod for recent unique_ptr changes 2019-05-18 00:08:00 +01:00
scripts Remove Profile Mode, deprecated since GCC 7.1 2019-05-13 11:50:21 +01:00
src Remove incorrect assertion from filesystem::absolute 2019-05-16 23:52:10 +01:00
testsuite PR c++/90532 Ensure __is_constructible(T[]) is false 2019-05-20 12:32:51 +01:00
acinclude.m4 PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
aclocal.m4 Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
ChangeLog PR c++/90532 Ensure __is_constructible(T[]) is false 2019-05-20 12:32:51 +01:00
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ChangeLog-2016 Update copyright years. 2017-01-01 13:07:43 +01:00
ChangeLog-2017 Update copyright years. 2018-01-03 11:03:58 +01:00
ChangeLog-2018 Update copyright years. 2019-01-01 13:31:55 +01:00
config.h.in PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure.ac PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure.host Remove obsolete Solaris 10 support 2019-05-14 17:17:23 +00:00
crossconfig.m4 PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
fragment.am PR libstdc++/86450 use -Wabi=2 and simplify -Werror use 2018-07-17 14:18:47 +01:00
linkage.m4
Makefile.am Update copyright years. 2019-01-01 13:31:55 +01:00
Makefile.in PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
README

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.