diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9eaa15fe3d..3199eaacc9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-02  Joel Brobecker  <brobecker@adacore.com>
+
+	* dwarf2read.c (read_unspecified_type): Treat
+	DW_TAG_enumeration_type DIEs from Ada units as stubs.
+
 2018-01-01  Joel Brobecker  <brobecker@adacore.com>
 
 	Update copyright year range in all GDB files.
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index b4f5cd1e3c..4dbd5c35d7 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -17693,11 +17693,16 @@ read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu)
 {
   struct type *type;
 
-  /* For now, we only support the C meaning of an unspecified type: void.  */
-
   type = init_type (cu->objfile, TYPE_CODE_VOID, 0, NULL);
   TYPE_NAME (type) = dwarf2_name (die, cu);
 
+  /* In Ada, an unspecified type is typically used when the description
+     of the type is defered to a different unit.  When encountering
+     such a type, we treat it as a stub, and try to resolve it later on,
+     when needed.  */
+  if (cu->language == language_ada)
+    TYPE_STUB (type) = 1;
+
   return set_die_type (die, type, cu);
 }