From 0ca5254c5d92aec675b76b4bfa72a6885cde6066 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Sat, 29 Oct 2022 04:30:52 +0200
Subject: [PATCH] glib/gmacros: Always define NULL as nullptr in C++11 and
 newer

---
 glib/gmacros.h     |  9 ++++++++-
 glib/tests/cxx.cpp | 13 -------------
 2 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/glib/gmacros.h b/glib/gmacros.h
index 530284110..9fe827082 100644
--- a/glib/gmacros.h
+++ b/glib/gmacros.h
@@ -870,10 +870,17 @@
  */
 #ifndef NULL
 #  ifdef __cplusplus
-#  define NULL        (0L)
+#    if __cplusplus >= 201103L
+#      define NULL (nullptr)
+#    else
+#      define NULL (0L)
+#    endif /* __cplusplus >= 201103L */
 #  else /* !__cplusplus */
 #  define NULL        ((void*) 0)
 #  endif /* !__cplusplus */
+#elif defined (__cplusplus) && __cplusplus >= 201103L
+#  undef NULL
+#  define NULL (nullptr)
 #endif
 
 #ifndef	FALSE
diff --git a/glib/tests/cxx.cpp b/glib/tests/cxx.cpp
index 6ac60791c..045457c6e 100644
--- a/glib/tests/cxx.cpp
+++ b/glib/tests/cxx.cpp
@@ -34,21 +34,12 @@ test_typeof (void)
   MyObject *obj3 = g_atomic_pointer_get (&obj2);
   g_assert_true (obj3 == obj);
 
-#if __cplusplus >= 201103L
-  MyObject *obj4 = nullptr;
-#else
   MyObject *obj4 = NULL;
-#endif
   g_atomic_pointer_set (&obj4, obj3);
   g_assert_true (obj4 == obj);
 
-#if __cplusplus >= 201103L
-  MyObject *obj5 = nullptr;
-  g_atomic_pointer_compare_and_exchange (&obj5, nullptr, obj4);
-#else
   MyObject *obj5 = NULL;
   g_atomic_pointer_compare_and_exchange (&obj5, NULL, obj4);
-#endif
   g_assert_true (obj5 == obj);
 
   MyObject *obj6 = g_steal_pointer (&obj5);
@@ -195,11 +186,7 @@ test_steal_pointer (void)
 int
 main (int argc, char *argv[])
 {
-#if __cplusplus >= 201103L
-  g_test_init (&argc, &argv, nullptr);
-#else
   g_test_init (&argc, &argv, NULL);
-#endif
 
   g_test_add_func ("/C++/typeof", test_typeof);
   g_test_add_func ("/C++/atomic-pointer-compare-and-exchange", test_atomic_pointer_compare_and_exchange);