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libstdc++: Fix unconditional definition of __cpp_lib_span in <version> [PR 97869}
authorJonathan Wakely <jwakely@redhat.com>
Tue, 17 Nov 2020 15:26:29 +0000 (15:26 +0000)
committerJonathan Wakely <jwakely@redhat.com>
Tue, 17 Nov 2020 16:13:14 +0000 (16:13 +0000)
commitecf65330c11544ebf35e198087b4a42be089c620
tree1e03fe11473e513d9a7d8429367a75f20bdc1e8dtree
parent1f8ac759918729e9402c3154c8e5110bfd4c6459commit | diff
libstdc++: Fix unconditional definition of __cpp_lib_span in <version> [PR 97869}

The <span> header is empty unless Concepts are supported, but <version>
defines the __cpp_lib_span feature test macro unconditionally. It should
be guarded by the same conditions as in <span>.

libstdc++-v3/ChangeLog:

PR libstdc++/97869
* include/precompiled/stdc++.h: Include <coroutine>.
* include/std/version (__cpp_lib_span): Check __cpp_lib_concepts
before defining.
libstdc++-v3/include/precompiled/stdc++.h diff | blob | history
libstdc++-v3/include/std/version diff | blob | history