[gcc r12-8539] c++: avoid <memory> poisoning on musl [PR106102]

[Sergei Trofimovich <slyfox@gcc.gnu.org>]

https://gcc.gnu.org/g:de6f402a54f7e6a3f8a79d723a25724e6274cc3e

commit r12-8539-gde6f402a54f7e6a3f8a79d723a25724e6274cc3e
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.
    
    (cherry picked from commit 3b21c21f3f5726823e19728fdd1571a14aae0fb3)

Diff:
---
 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 cebf9c35c1d..5c5d02bb523 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -202,6 +202,7 @@ 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"