1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/lookup/builtin4.C b/gcc/testsuite/g++.dg/lookup/builtin4.C
new file mode 100644
index 000000000..b1785dcc7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lookup/builtin4.C
@@ -0,0 +1,15 @@
+// Copyright (C) 2007 Free Software Foundation
+// Contributed by Ollie Wild <aaw@google.com>
+// Origin: Volker Reichelt <reichelt@gcc.gnu.org>
+// { dg-do compile }
+
+// PR 31749: ICE with redeclaration of builtin
+
+namespace std
+{
+  union abort;
+}
+
+union abort;
+
+using std::abort; // { dg-error "" }