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Luc Grosheintz dfab6593b0 libstdc++: Make the default ctor of mdspan conditionally noexcept.

Previously, the default ctor of mdspan was never noexcept, even if all
members of mdspan were nothrow default constructible.

This commit makes mdspan conditionally nothrow default constructible.
A similar strengthening happens in libc++.

libstdc++-v3/ChangeLog:

	* include/std/mdspan (mdspan::mdspan): Make default ctor
	conditionally noexcept.
	* testsuite/23_containers/mdspan/mdspan.cc: Add tests.

Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Signed-off-by: Luc Grosheintz <luc.grosheintz@gmail.com>

2025-07-21 17:48:02 +02:00

backward

…

bits

libstdc++: Only define __any_input_iterator for C++20

2025-07-19 00:10:10 +01:00

…

c_compatibility

…

c_global

libstdc++: Use __promote_3 for std::hypot [PR121097]

2025-07-17 09:48:12 +01:00