[glibc/release/2.34/master] Fix build of nptl/tst-thread_local1.cc with GCC 12

[Florian Weimer <fw@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=803c959745fd7c679e00f9bad58822616f0e51cb

commit 803c959745fd7c679e00f9bad58822616f0e51cb
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon Aug 2 16:33:44 2021 +0000

    Fix build of nptl/tst-thread_local1.cc with GCC 12
    
    The test nptl/tst-thread_local1.cc fails to build with GCC mainline
    because of changes to what libstdc++ headers implicitly include what
    other headers:
    
    tst-thread_local1.cc: In function 'int do_test()':
    tst-thread_local1.cc:177:5: error: variable 'std::array<std::pair<const char*, std::function<void(void* (*)(void*))> >, 2> do_thread_X' has initializer but incomplete type
      177 |     do_thread_X
          |     ^~~~~~~~~~~
    
    Fix this by adding an explicit include of <array>.
    
    Tested with build-many-glibcs.py for aarch64-linux-gnu.
    
    (cherry picked from commit 2ee9b24f47db8d0a8d0ccadb999335a1d4cfc364)

Diff:
---
 nptl/tst-thread_local1.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nptl/tst-thread_local1.cc b/nptl/tst-thread_local1.cc
index 9608afa4b7..338aafea05 100644
--- a/nptl/tst-thread_local1.cc
+++ b/nptl/tst-thread_local1.cc
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include <array>
 #include <functional>
 #include <string>
 #include <thread>