[committed] libstdc++: Fix declarations of memalign etc. for freestanding [PR 97570]

[committed] libstdc++: Fix declarations of memalign etc. for freestanding [PR 97570]

[Jonathan Wakely]

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libstdc++-v3/ChangeLog:

	PR libstdc++/97570
	* libsupc++/new_opa.cc: Declare size_t in global namespace.
	Remove unused header.

Tested x86_64-linux. Successfully built for avr cross (with avr-libc
2.0).

Committed to trunk.


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commit 93e9a7bcd5434a24c945de33cd7fa01a25f68418
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Oct 26 12:02:50 2020

    libstdc++: Fix declarations of memalign etc. for freestanding [PR 97570]
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/97570
            * libsupc++/new_opa.cc: Declare size_t in global namespace.
            Remove unused header.

diff --git a/libstdc++-v3/libsupc++/new_opa.cc b/libstdc++-v3/libsupc++/new_opa.cc
index b935936e19a..732fe827cda 100644
--- a/libstdc++-v3/libsupc++/new_opa.cc
+++ b/libstdc++-v3/libsupc++/new_opa.cc
@@ -26,7 +26,6 @@
 #include <bits/c++config.h>
 #include <stdlib.h>
 #include <stdint.h>
-#include <bits/exception_defines.h>
 #include <bit>
 #include "new"
 
@@ -44,6 +43,7 @@ using std::new_handler;
 using std::bad_alloc;
 
 #if ! _GLIBCXX_HOSTED
+using std::size_t;
 extern "C"
 {
 # if _GLIBCXX_HAVE_ALIGNED_ALLOC