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

  From: Sergei Trofimovich <siarheit@google.com>

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

	libcc1/
	* libcc1plugin.cc: Ditto.
	* libcp1plugin.cc: Ditto.
---
 gcc/cp/mapper-client.cc   | 1 +
 gcc/cp/mapper-resolver.cc | 1 +
 gcc/cp/module.cc          | 1 +
 libcc1/libcc1plugin.cc    | 1 +
 libcc1/libcp1plugin.cc    | 1 +
 5 files changed, 5 insertions(+)
  

> Am 27.06.2022 um 16:50 schrieb Sergei Trofimovich <slyich@gmail.com>:
> 
> From: Sergei Trofimovich <siarheit@google.com>
> 
> 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/
>    * mapper-client.cc: Include <memory> via "system.h".
>    * mapper-resolver.cc: Ditto.
>    * module.cc: Ditto.
> 
>    libcc1/
>    * libcc1plugin.cc: Ditto.

You should repeat the actual entry for the different ChangeLog.

Ok wir that change

Richard 
>    * libcp1plugin.cc: Ditto.
> ---
> gcc/cp/mapper-client.cc   | 1 +
> gcc/cp/mapper-resolver.cc | 1 +
> gcc/cp/module.cc          | 1 +
> libcc1/libcc1plugin.cc    | 1 +
> libcc1/libcp1plugin.cc    | 1 +
> 5 files changed, 5 insertions(+)
> 
> diff --git a/gcc/cp/mapper-client.cc b/gcc/cp/mapper-client.cc
> index 8603a886a09..fe9544b5ba4 100644
> --- a/gcc/cp/mapper-client.cc
> +++ b/gcc/cp/mapper-client.cc
> @@ -27,6 +27,7 @@ along with GCC; see the file COPYING3.  If not see
> #define INCLUDE_STRING
> #define INCLUDE_VECTOR
> #define INCLUDE_MAP
> +#define INCLUDE_MEMORY
> #include "system.h"
> 
> #include "line-map.h"
> diff --git a/gcc/cp/mapper-resolver.cc b/gcc/cp/mapper-resolver.cc
> index e3d29fb5ada..e70d1b4ae2c 100644
> --- a/gcc/cp/mapper-resolver.cc
> +++ b/gcc/cp/mapper-resolver.cc
> @@ -25,6 +25,7 @@ along with GCC; see the file COPYING3.  If not see
> #define INCLUDE_VECTOR
> #define INCLUDE_ALGORITHM
> #define INCLUDE_MAP
> +#define INCLUDE_MEMORY
> #include "system.h"
> 
> // We don't want or need to be aware of networking
> diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
> index e7ce40ef464..99f10733d4b 100644
> --- a/gcc/cp/module.cc
> +++ b/gcc/cp/module.cc
> @@ -206,6 +206,7 @@ Classes used:
> 
> #define _DEFAULT_SOURCE 1 /* To get TZ field of struct tm, if available.  */
> #include "config.h"
> +#define INCLUDE_MEMORY
> #define INCLUDE_STRING
> #define INCLUDE_VECTOR
> #include "system.h"
> diff --git a/libcc1/libcc1plugin.cc b/libcc1/libcc1plugin.cc
> index 12ab5a57c8d..bdd0bdabe77 100644
> --- a/libcc1/libcc1plugin.cc
> +++ b/libcc1/libcc1plugin.cc
> @@ -31,6 +31,7 @@
> #undef PACKAGE_TARNAME
> #undef PACKAGE_VERSION
> 
> +#define INCLUDE_MEMORY
> #include "gcc-plugin.h"
> #include "system.h"
> #include "coretypes.h"
> diff --git a/libcc1/libcp1plugin.cc b/libcc1/libcp1plugin.cc
> index 83dab7f58b1..e2d5039a0a1 100644
> --- a/libcc1/libcp1plugin.cc
> +++ b/libcc1/libcp1plugin.cc
> @@ -32,6 +32,7 @@
> #undef PACKAGE_TARNAME
> #undef PACKAGE_VERSION
> 
> +#define INCLUDE_MEMORY
> #include "gcc-plugin.h"
> #include "system.h"
> #include "coretypes.h"
> -- 
> 2.36.1
>