1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-5.C b/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-5.C
new file mode 100644
index 00000000000..185d2b5c4ee
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-5.C
@@ -0,0 +1,20 @@
+// PR c++/52718
+// { dg-options "-Wzero-as-null-pointer-constant" }
+
+struct foo
+{
+  foo(void* a = 0) {};      // { dg-warning "zero as null pointer" }
+};
+
+void* fun(void* a = 0) {};  // { dg-warning "zero as null pointer" }
+
+struct bar: foo
+{
+  bar() {};
+};
+
+struct baz
+{
+  baz(const foo& f1 = foo(),
+      void* f2 = fun()) {};
+};