Index: src/fkey.c
==================================================================
--- src/fkey.c
+++ src/fkey.c
@@ -1161,10 +1161,13 @@
   Trigger *pTrigger;              /* Trigger definition to return */
   int iAction = (pChanges!=0);    /* 1 for UPDATE, 0 for DELETE */
 
   action = pFKey->aAction[iAction];
   pTrigger = pFKey->apTrigger[iAction];
+  if( (db->flags & SQLITE_DeferFKs) && action==OE_Restrict ){
+    return 0;
+  }
 
   if( action!=OE_None && !pTrigger ){
     u8 enableLookaside;           /* Copy of db->lookaside.bEnabled */
     char const *zFrom;            /* Name of child table */
     int nFrom;                    /* Length in bytes of zFrom */

Index: test/fkey6.test
==================================================================
--- test/fkey6.test
+++ test/fkey6.test
@@ -21,10 +21,11 @@
 # OFF so that foreign key constraints are only deferred if they are
 # created as "DEFERRABLE INITIALLY DEFERRED".
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
+set testprefix fkey6
 
 ifcapable {!foreignkey} {
   finish_test
   return
 }
@@ -168,8 +169,61 @@
     INSERT INTO c1 VALUES('three');
     DROP TABLE c1;
   COMMIT;
   PRAGMA defer_foreign_keys;
 } {0}
+
+#--------------------------------------------------------------------------
+# Test that defer_foreign_keys disables RESTRICT.
+#
+do_execsql_test 3.1 {
+  CREATE TABLE p2(a PRIMARY KEY, b);
+  CREATE TABLE c2(x, y REFERENCES p2 ON DELETE RESTRICT ON UPDATE RESTRICT);
+  INSERT INTO p2 VALUES(1, 'one');
+  INSERT INTO p2 VALUES(2, 'two');
+  INSERT INTO c2 VALUES('i', 1);
+}
+
+do_catchsql_test 3.2.1 {
+  BEGIN;
+    UPDATE p2 SET a=a-1;
+} {1 {FOREIGN KEY constraint failed}}
+do_execsql_test 3.2.2 { COMMIT }
+
+do_execsql_test 3.2.3 {
+  BEGIN;
+    PRAGMA defer_foreign_keys = 1;
+    UPDATE p2 SET a=a-1;
+  COMMIT;
+}
+
+do_execsql_test 3.2.4 {
+  BEGIN;
+    PRAGMA defer_foreign_keys = 1;
+    UPDATE p2 SET a=a-1;
+}
+do_catchsql_test 3.2.5 {
+  COMMIT;
+} {1 {FOREIGN KEY constraint failed}}
+do_execsql_test 3.2.6 { ROLLBACK }
+
+do_execsql_test 3.3.1 {
+  CREATE TRIGGER p2t AFTER DELETE ON p2 BEGIN
+    INSERT INTO p2 VALUES(old.a, 'deleted!');
+  END;
+}
+do_catchsql_test 3.3.2 {
+  BEGIN;
+    DELETE FROM p2 WHERE a=1;
+} {1 {FOREIGN KEY constraint failed}}
+do_execsql_test 3.3.3 { COMMIT }
+
+do_execsql_test 3.3.4 {
+  BEGIN;
+    PRAGMA defer_foreign_keys = 1;
+    DELETE FROM p2 WHERE a=1;
+  COMMIT;
+  SELECT * FROM p2;
+} {0 one 1 deleted!}
 
 
 finish_test