From: ken <ken@mihrtec.com>
Date: Fri, 20 Jan 2017 17:17:32 +0000 (-0800)
Subject: removed set parent, crawl_set relies on internal rewind stack
X-Git-Url: https://www.kengrimes.com/gitweb/?p=henge%2Fapc.git;a=commitdiff_plain;h=72b4785c5b92263d4939ab635cb8bf2686e7c4b4

removed set parent, crawl_set relies on internal rewind stack
---

diff --git a/src/ir.c b/src/ir.c
index ab97305..341028e 100644
--- a/src/ir.c
+++ b/src/ir.c
@@ -101,7 +101,7 @@ struct ir_class_t
   uint8_t*           name;
 };
 struct ir_set_t
-{ struct ir_set_t*      nextchild, * nextsib, * p;
+{ struct ir_set_t*      nextchild, * nextsib;
   uint32_t              ref;
   uint8_t*              name;
   struct ir_framebox_t* frameboxes;
@@ -696,21 +696,19 @@ void crawl_set
 ( struct ir_set_t* set,
   int depth
 )
-{ struct ir_set_t* iter, * last;
+{ struct ir_set_t* setlist[64], ** slp, * iter;
   int i;
   pspace(depth * 12);
-  last = NULL;
   i = depth;
+  slp = setlist;
   for(iter = set; iter != NULL; iter = iter->nextchild)
     { uprintf("[%10U]", iter->name);
-      if (last != NULL)
-	iter->p = last;
-      last = iter;
+      *slp++ = iter;
       i++;
     }
   --i;
   putchar('\n');
-  for(iter = last; iter != NULL; iter = iter->p, --i)
+  for(iter = *--slp; slp >= setlist; iter = *--slp, --i)
     if (iter->nextsib != NULL)
       crawl_set(iter->nextsib,i);
 }