[gcc r14-9140] testsuite: fix Wmismatched-new-delete-8.C with -m32

[Marek Polacek <mpolacek@gcc.gnu.org>]

https://gcc.gnu.org/g:d34d7c74d51d365a3a4ddcd4383fc7c9f29020a1

commit r14-9140-gd34d7c74d51d365a3a4ddcd4383fc7c9f29020a1
Author: Marek Polacek <polacek@redhat.com>
Date:   Thu Feb 22 18:52:32 2024 -0500

    testsuite: fix Wmismatched-new-delete-8.C with -m32
    
    This fixes
    error: 'operator new' takes type 'size_t' ('unsigned int') as first parameter [-fpermissive]
    
    gcc/testsuite/ChangeLog:
    
            * g++.dg/warn/Wmismatched-new-delete-8.C: Use __SIZE_TYPE__.

Diff:
---
 gcc/testsuite/g++.dg/warn/Wmismatched-new-delete-8.C | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/g++.dg/warn/Wmismatched-new-delete-8.C b/gcc/testsuite/g++.dg/warn/Wmismatched-new-delete-8.C
index 0ddc056c6df2..e8fd7a85b8c9 100644
--- a/gcc/testsuite/g++.dg/warn/Wmismatched-new-delete-8.C
+++ b/gcc/testsuite/g++.dg/warn/Wmismatched-new-delete-8.C
@@ -11,7 +11,7 @@ static inline T * construct_at(void *at, ARGS && args)
  struct Placeable : T
  {
   Placeable(ARGS && args) : T(args) { }
-  void * operator new (long unsigned int, void *ptr) { return ptr; }
+  void * operator new (__SIZE_TYPE__, void *ptr) { return ptr; }
   void operator delete (void *, void *) { }
  };
  return new (at) Placeable(static_cast<ARGS &&>(args));