2010-07-12 Jerry DeLisle <jvdelisle@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / tree-browser.c

diff --git a/gcc/tree-browser.c b/gcc/tree-browser.c
index 0180d3a..3803a50 100644 (file)
--- a/gcc/tree-browser.c
+++ b/gcc/tree-browser.c
@@ -25,7 +25,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "tm.h"
 #include "tree.h"
 #include "tree-inline.h"
-#include "diagnostic.h"
 #include "tree-pretty-print.h"
 #include "hashtab.h"
 
@@ -109,7 +108,7 @@ void browse_tree (tree);
 
 /* Static variables.  */
 static htab_t TB_up_ht;
-static tree TB_history_stack = NULL_TREE;
+static VEC(tree,gc) *TB_history_stack;
 static int TB_verbose = 1;
 
 
@@ -127,7 +126,7 @@ browse_tree (tree begin)
   fprintf (TB_OUT_FILE, "\nTree Browser\n");
 
 #define TB_SET_HEAD(N) do {                                           \
-  TB_history_stack = tree_cons (NULL_TREE, (N), TB_history_stack);    \
+  VEC_safe_push (tree, gc, TB_history_stack, N);                      \
   head = N;                                                           \
   if (TB_verbose)                                                     \
     if (head)                                                         \
@@ -877,11 +876,11 @@ find_node_with_code (tree *tp, int *walk_subtrees ATTRIBUTE_UNUSED,
 static tree
 TB_history_prev (void)
 {
-  if (TB_history_stack)
+  if (!VEC_empty (tree, TB_history_stack))
     {
-      TB_history_stack = TREE_CHAIN (TB_history_stack);
-      if (TB_history_stack)
-       return TREE_VALUE (TB_history_stack);
+      tree last = VEC_last (tree, TB_history_stack);
+      VEC_pop (tree, TB_history_stack);
+      return last;
     }
   return NULL_TREE;
 }