[committed] libstdc++: Support printing volatile pointers (P1147R1)

[Daniel Krügler]

Am Di., 5. Okt. 2021 um 10:55 Uhr schrieb Jonathan Wakely via
Libstdc++ <libstdc++@gcc.gnu.org>:
>
> To avoid needing to export a new symbol from the library (for now) the
> new member function uses __attribute__((always_inline)).
>
> libstdc++-v3/ChangeLog:
>
>         * include/std/ostream (operator<<(const volatile void*)):
>         Add new overload, as per P1147R1.
>         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
>         New test.
>
> Tested powerpc64le-linux. Committed to trunk.

I think the test is insufficient, because it will succeed on every
library implementation regardless of the new feature. Without the new
feature it will select the unexpected operator<<(bool) overload and
just print "1".

- Daniel