[libcxxabi] [test] Use the correct printf formats for printing pointers

[mstorsjo]

Summary

Don't cast the pointers to long, as that's not large enough for
pointers on 64 bit Windows.

[mstorsjo]

Ping

libcxxabi/test/test_fallback_malloc.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #include <cstdio>
 #include <deque>
 #include <cassert>
+#include <inttypes.h>
 
 #include <__threading_support>
 
 // UNSUPPORTED: c++03
 // UNSUPPORTED: modules-build && no-threads
 
 // Necessary because we include a private source file of libc++abi, which
 // only understands _LIBCXXABI_HAS_NO_THREADS.

 
 }
 
 
 int main () {
     print_free_list ();
 
     char *p = (char *) fallback_malloc ( 1024 );    // too big!
-    std::printf("fallback_malloc ( 1024 ) --> %lu\n", (unsigned long ) p);
+    std::printf("fallback_malloc ( 1024 ) --> %" PRIuPTR"\n", (uintptr_t) p);
     print_free_list ();
 
     p = (char *) fallback_malloc ( 32 );
-    std::printf("fallback_malloc ( 32 ) --> %lu\n", (unsigned long) (p - heap));
+    std::printf("fallback_malloc ( 32 ) --> %" PRIuPTR"\n", (uintptr_t) (p - heap));
     if ( !is_fallback_ptr ( p ))
         std::printf("### p is not a fallback pointer!!\n");
 
     print_free_list ();
     fallback_free ( p );
     print_free_list ();
 
     exhaustion_test1();
     exhaustion_test2();
     exhaustion_test3();
     return 0;
 }