X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Ftransformations.c;h=8b246b7399d036826361412bc0b3657b702f4a93;hb=85a1b8344963e53f51aef3546a74f611dc10565b;hp=46241c8fc2bab393571233def90bb16fb1a261ba;hpb=765362af497f7b1f9c9a5ef387d40eac474fbbe3;p=pspp

diff --git a/src/data/transformations.c b/src/data/transformations.c
index 46241c8fc2..8b246b7399 100644
--- a/src/data/transformations.c
+++ b/src/data/transformations.c
@@ -44,7 +44,6 @@ struct trns_chain
     struct transformation *trns;        /* Array of transformations. */
     size_t trns_cnt;                    /* Number of transformations. */
     size_t trns_cap;                    /* Allocated capacity. */
-    bool finalized;                     /* Finalize functions called? */
   };
 
 /* Allocates and returns a new transformation chain. */
@@ -55,24 +54,10 @@ trns_chain_create (void)
   chain->trns = NULL;
   chain->trns_cnt = 0;
   chain->trns_cap = 0;
-  chain->finalized = false;
   return chain;
 }
 
-/* Finalizes all the un-finalized transformations in CHAIN.
-   Any given transformation is only finalized once. */
-void
-trns_chain_finalize (struct trns_chain *chain)
-{
-  while (!chain->finalized)
-    {
-      ctl_stack_clear ();       /* XXX layering violation */
-      chain->finalized = true;
-    }
-}
-
-/* Destroys CHAIN, finalizing it in the process if it has not
-   already been finalized. */
+/* Destroys CHAIN. */
 bool
 trns_chain_destroy (struct trns_chain *chain)
 {
@@ -82,9 +67,6 @@ trns_chain_destroy (struct trns_chain *chain)
     {
       size_t i;
 
-      /* Needed to ensure that the control stack gets cleared. */
-      trns_chain_finalize (chain);
-
       for (i = 0; i < chain->trns_cnt; i++)
         {
           struct transformation *trns = &chain->trns[i];
@@ -114,8 +96,6 @@ trns_chain_append (struct trns_chain *chain, trns_proc_func *execute,
 {
   struct transformation *trns;
 
-  chain->finalized = false;
-
   if (chain->trns_cnt == chain->trns_cap)
     chain->trns = x2nrealloc (chain->trns, &chain->trns_cap,
                               sizeof *chain->trns);
@@ -127,17 +107,12 @@ trns_chain_append (struct trns_chain *chain, trns_proc_func *execute,
   trns->aux = aux;
 }
 
-/* Appends the transformations in SRC to those in DST,
-   and destroys SRC.
-   Both DST and SRC must already be finalized. */
+/* Appends the transformations in SRC to those in DST, and destroys SRC. */
 void
 trns_chain_splice (struct trns_chain *dst, struct trns_chain *src)
 {
   size_t i;
 
-  assert (dst->finalized);
-  assert (src->finalized);
-
   if (dst->trns_cnt + src->trns_cnt > dst->trns_cap)
     {
       dst->trns_cap = dst->trns_cnt + src->trns_cnt;
@@ -177,7 +152,6 @@ trns_chain_execute (const struct trns_chain *chain, enum trns_result start,
 {
   int i;
 
-  assert (chain->finalized);
   for (i = start < 0 ? 0 : start; i < chain->trns_cnt; )
     {
       struct transformation *trns = &chain->trns[i];