In Sema, whenever we think that a function is going to cause a vtable to be generated, we mark any virtual implicit member functions as referenced.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90327 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/SemaCXX/implicit-virtual-member-functions.cpp b/test/SemaCXX/implicit-virtual-member-functions.cpp
new file mode 100644
index 0000000000..30fe2786ba
--- /dev/null
+++ b/test/SemaCXX/implicit-virtual-member-functions.cpp
@@ -0,0 +1,29 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+struct A {
+  virtual ~A();
+};
+
+struct B : A { // expected-error {{no suitable member 'operator delete' in 'B'}}
+  virtual void f();
+
+  void operator delete (void *, int); // expected-note {{'operator delete' declared here}}
+};
+
+void B::f() { // expected-note {{implicit default destructor for 'struct B' first required here}}
+}
+
+struct C : A { // expected-error {{no suitable member 'operator delete' in 'C'}}
+  C();
+  void operator delete(void *, int); // expected-note {{'operator delete' declared here}}
+};
+
+C::C() { } // expected-note {{implicit default destructor for 'struct C' first required here}}
+
+struct D : A { // expected-error {{no suitable member 'operator delete' in 'D'}}
+  void operator delete(void *, int); // expected-note {{'operator delete' declared here}}
+};
+
+void f() {
+  new D; // expected-note {{implicit default destructor for 'struct D' first required here}}
+}
+