1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/parse/ambig4.C b/gcc/testsuite/g++.dg/parse/ambig4.C
new file mode 100644
index 000000000..868f07cf7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/ambig4.C
@@ -0,0 +1,18 @@
+// PR c++/20293
+
+namespace hide { // { dg-error "hide" }
+  int k;
+}
+
+namespace {
+  int i; 
+  namespace hide { // { dg-error "hide" }
+    int j; 
+  }
+}
+
+void F(int) {}
+
+int main() {
+  F(hide::j); // { dg-error "ambiguous" }
+}