Added missing clause to parser.

diff --git a/src/interfaces/ecpg/preproc/preproc.y b/src/interfaces/ecpg/preproc/preproc.y
index b1767d4e16b8c7cedabfe1c297d4691ef162506a..cdbb5b64197db116b738a52d6254dfc4bd0b5725 100644 (file)
--- a/src/interfaces/ecpg/preproc/preproc.y
+++ b/src/interfaces/ecpg/preproc/preproc.y
@@ -1661,6 +1661,10 @@ ConstraintAttributeSpec: ConstraintDeferrabilitySpec     { $$ = $1; }
 
                        $$ = cat2_str($1, $2);
                }
+               | /* EMPTY */
+               {
+                       $$ = EMPTY;
+               }
                ;
 
 ConstraintDeferrabilitySpec: NOT DEFERRABLE