1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/init/ctor4.C b/gcc/testsuite/g++.dg/init/ctor4.C
new file mode 100644
index 00000000000..70643ec4e10
--- /dev/null
+++ b/gcc/testsuite/g++.dg/init/ctor4.C
@@ -0,0 +1,20 @@
+// PR c++/17788
+// { dg-do compile }
+
+class foo {
+public:
+  foo();
+};
+
+class bar: public foo {// { dg-error "uninitialized" }
+private:
+  int &a;
+};
+
+foo::foo() {
+}
+
+int main(int argc, char **argv)
+{
+  bar x; // { dg-error "synthesized" }
+}