PR jit/63854: Fix leak of "avail" within tree-ssa-pre.c

gcc/ChangeLog:
	PR jit/63854
	* tree-ssa-pre.c (do_regular_insertion): Convert "avail" from
	vec<> to auto_vec<> to fix a leak.

From-SVN: r217803

gcc/ChangeLog

 2014-11-19  David Malcolm  <dmalcolm@redhat.com>
 
 	PR jit/63854
+	* tree-ssa-pre.c (do_regular_insertion): Convert "avail" from
+	vec<> to auto_vec<> to fix a leak.
+
+2014-11-19  David Malcolm  <dmalcolm@redhat.com>
+
+	PR jit/63854
 	* dwarf2out.c (dwarf2out_c_finalize): Free producer_string.
 
 2014-11-19  David Malcolm  <dmalcolm@redhat.com>

gcc/tree-ssa-pre.c

@@ -3202,7 +3202,7 @@ do_regular_insertion (basic_block block, basic_block dom)
   bool new_stuff = false;
   vec<pre_expr> exprs;
   pre_expr expr;
-  vec<pre_expr> avail = vNULL;
+  auto_vec<pre_expr> avail;
   int i;
 
   exprs = sorted_array_from_bitmap_set (ANTIC_IN (block));