[Bug c++/106102] gcc/cp/mapper-resolver.cc fails to build against musl: musl-1.2.3-dev/include/sched.h:84:7: error: attempt to use poisoned "calloc"

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106102

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergei Trofimovich <slyfox@gcc.gnu.org>:

https://gcc.gnu.org/g:3b21c21f3f5726823e19728fdd1571a14aae0fb3

commit r13-1311-g3b21c21f3f5726823e19728fdd1571a14aae0fb3
Author: Sergei Trofimovich <siarheit@google.com>
Date:   Mon Jun 27 13:27:24 2022 +0100

    c++: avoid <memory> poisoning on musl [PR106102]

    On musl <pthread.h> uses calloc() (via <sched.h>). <memory> includes
    it indirectly and exposes use of poisoned calloc() when module code
    is built:

        /build/build/./prev-gcc/xg++ ...
../../gcc-13-20220626/gcc/cp/mapper-resolver.cc
            In file included from /<<NIX>>/musl-1.2.3-dev/include/pthread.h:30,
                     from
/build/build/prev-x86_64-unknown-linux-musl/libstdc++-v3/include/x86_64-unknown-linux-musl/bits/gthr-default.h:35,
                     ....
                     from
/build/build/prev-x86_64-unknown-linux-musl/libstdc++-v3/include/memory:77,
                     from ../../gcc-13-20220626/gcc/../libcody/cody.hh:24,
                     from
../../gcc-13-20220626/gcc/cp/../../c++tools/resolver.h:25,
                     from
../../gcc-13-20220626/gcc/cp/../../c++tools/resolver.cc:23,
                     from ../../gcc-13-20220626/gcc/cp/mapper-resolver.cc:32:
        /<<NIX>>/musl-1.2.3-dev/include/sched.h:84:7: error: attempt to use
poisoned "calloc"
           84 | void *calloc(size_t, size_t);
              |       ^
        /<<NIX>>/musl-1.2.3-dev/include/sched.h:124:36: error: attempt to use
poisoned "calloc"
          124 | #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
              |                                    ^

    gcc/cp/

            PR c++/106102
            * mapper-client.cc: Include <memory> via "system.h".
            * mapper-resolver.cc: Ditto.
            * module.cc: Ditto.

    libcc1/

            PR c++/106102
            * libcc1plugin.cc: Include <memory> via "system.h".
            * libcp1plugin.cc: Ditto.