[gcc r15-1532] libstdc++: Initialize base in test allocator's constructor

[Jonathan Wakely]

https://gcc.gnu.org/g:e2fb245b07f489ed5bfd9a945e0053b4a3211245

commit r15-1532-ge2fb245b07f489ed5bfd9a945e0053b4a3211245
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Jun 20 16:13:10 2024 +0100

    libstdc++: Initialize base in test allocator's constructor
    
    This fixes a warning from one of the test allocators:
    warning: base class 'class std::allocator<__gnu_test::copy_tracker>' should be explicitly initialized in the copy constructor [-Wextra]
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/util/testsuite_allocator.h (tracker_allocator):
            Initialize base class in copy constructor.

Diff:
---
 libstdc++-v3/testsuite/util/testsuite_allocator.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/testsuite/util/testsuite_allocator.h b/libstdc++-v3/testsuite/util/testsuite_allocator.h
index b7739f13ca3..2f9c453cbd1 100644
--- a/libstdc++-v3/testsuite/util/testsuite_allocator.h
+++ b/libstdc++-v3/testsuite/util/testsuite_allocator.h
@@ -154,7 +154,7 @@ namespace __gnu_test
       tracker_allocator()
       { }
 
-      tracker_allocator(const tracker_allocator&)
+      tracker_allocator(const tracker_allocator& a) : Alloc(a)
       { }
 
       ~tracker_allocator()