Added missing clause to parser.

diff --git a/src/interfaces/ecpg/preproc/preproc.y b/src/interfaces/ecpg/preproc/preproc.y
index 9409133282dda8846dfb8d6da1c02f3d5a128af7..3b022c7ff98b19feb46f418abc45e255716f5761 100644 (file)
--- a/src/interfaces/ecpg/preproc/preproc.y
+++ b/src/interfaces/ecpg/preproc/preproc.y
@@ -1813,6 +1813,10 @@ ConstraintAttributeSpec: ConstraintDeferrabilitySpec     { $$ = $1; }
 
                        $$ = cat2_str($1, $2);
                }
+               | /* EMPTY */
+               {
+                       $$ = EMPTY;
+               }
                ;
 
 ConstraintDeferrabilitySpec: NOT DEFERRABLE