Implement checking for base class access. Right now it's overly conservative but that will change. (Also, protected isn't implemented right now).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67827 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 51 insertions, 0 deletions

diff --git a/test/SemaCXX/access-base-class.cpp b/test/SemaCXX/access-base-class.cpp
new file mode 100644
index 0000000000..29586759b0
--- /dev/null
+++ b/test/SemaCXX/access-base-class.cpp
@@ -0,0 +1,51 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+namespace T1 {
+  
+class A { };
+class B : private A { }; // expected-note {{'private' inheritance specifier here}}
+
+void f(B* b) {
+  A *a = b; // expected-error{{conversion from 'class T1::B' to inaccessible base class 'class T1::A'}} \
+               expected-error{{incompatible type initializing 'class T1::B *', expected 'class T1::A *'}}
+}
+
+}
+
+namespace T2 { 
+
+class A { };
+class B : A { }; // expected-note {{inheritance is implicitly 'private'}}
+
+void f(B* b) {
+  A *a = b; // expected-error {{conversion from 'class T2::B' to inaccessible base class 'class T2::A'}} \
+               expected-error {{incompatible type initializing 'class T2::B *', expected 'class T2::A *'}}
+}
+
+}
+
+namespace T3 {
+
+class A { };
+class B : public A { }; 
+
+void f(B* b) {
+  A *a = b;
+}
+
+}
+
+namespace T4 {
+
+class A {};
+
+class B : private virtual A {};
+class C : public virtual A {};
+
+class D : public B, public C {};
+
+void f(D *d) {
+  // This takes the D->C->B->A path.
+  A *a = d;
+}
+
+}