1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/conversion/access1.C b/gcc/testsuite/g++.dg/conversion/access1.C
new file mode 100644
index 000000000..f187e63a9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/conversion/access1.C
@@ -0,0 +1,25 @@
+// PR c++/38579
+
+struct P 
+{
+protected:
+  P() {}
+  P(const P&) {}
+};
+
+struct B : protected P
+{
+  B() {}
+};
+
+struct C : public P
+{
+  // C can access P's copy ctor, but can't convert b to const P&.
+  C(const B& b) : P(b) {}	// { dg-error "inaccessible base" }
+};
+
+void foo()
+{
+  B b;
+  C c(b);
+}