diff -r -u php-5.1.6/ext/sqlite/pdo_sqlite2.c php-5.1.6.20060906.jcd.pdo_sqlite2_empty_query_segfault_fix/ext/sqlite/pdo_sqlite2.c
--- php-5.1.6/ext/sqlite/pdo_sqlite2.c	Wed Sep  6 23:21:57 2006
+++ php-5.1.6.20060906.jcd.pdo_sqlite2_empty_query_segfault_fix/ext/sqlite/pdo_sqlite2.c	Wed Sep  6 23:21:53 2006
@@ -96,6 +96,8 @@
 	if (S->einfo.errcode != SQLITE_OK) {
 		pdo_sqlite2_error_stmt(errmsg, stmt);
 		return 0;
+	} else if (S->vm == NULL) { /* empty query */
+		return 0;
 	}
 
 	S->done = 0;