X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fexpressions%2Fparse.c;h=5c1e4632fd5105d50ea840d4fdb93381dc9f11ec;hb=9491a8bd354152d3a228e1bf041c7ad6228750d7;hp=272090b17db88983700ae9c1fe952d75dc80abb1;hpb=480a0746507ce73d26f528b56dc3ed80195096e0;p=pspp-builds.git

diff --git a/src/language/expressions/parse.c b/src/language/expressions/parse.c
index 272090b1..5c1e4632 100644
--- a/src/language/expressions/parse.c
+++ b/src/language/expressions/parse.c
@@ -1278,18 +1278,14 @@ parse_function (struct lexer *lexer, struct expression *e)
   n->composite.min_valid = min_valid != -1 ? min_valid : f->array_min_elems; 
 
   if (n->type == OP_LAG_Vn || n->type == OP_LAG_Vs) 
-    {
-      if (dataset_n_lag (e->ds) < 1)
-        dataset_set_n_lag (e->ds, 1);
-    }
+    dataset_need_lag (e->ds, 1);
   else if (n->type == OP_LAG_Vnn || n->type == OP_LAG_Vsn)
     {
       int n_before;
       assert (n->composite.arg_cnt == 2);
       assert (n->composite.args[1]->type == OP_pos_int);
       n_before = n->composite.args[1]->integer.i;
-      if ( dataset_n_lag (e->ds) < n_before)
-        dataset_set_n_lag (e->ds, n_before);
+      dataset_need_lag (e->ds, n_before);
     }
   
   free (args);