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diff src/share/vm/opto/gcm.cpp @ 4820:cf407b7d3d78

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7116050: C2/ARM: memory stomping error with DivideMcTests Summary: Block::schedule_local() may write beyond end of ready_cnt array Reviewed-by: never, kvn
author roland
date Wed, 25 Jan 2012 09:31:47 +0100
parents 1bd45abaa507
children b9a9ed0f8eeb
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--- a/src/share/vm/opto/gcm.cpp	Tue Jan 24 17:00:51 2012 -0800
+++ b/src/share/vm/opto/gcm.cpp	Wed Jan 25 09:31:47 2012 +0100
@@ -1344,8 +1344,8 @@
 
   // Schedule locally.  Right now a simple topological sort.
   // Later, do a real latency aware scheduler.
-  int *ready_cnt = NEW_RESOURCE_ARRAY(int,C->unique());
-  memset( ready_cnt, -1, C->unique() * sizeof(int) );
+  uint max_idx = C->unique();
+  GrowableArray<int> ready_cnt(max_idx, max_idx, -1);
   visited.Clear();
   for (i = 0; i < _num_blocks; i++) {
     if (!_blocks[i]->schedule_local(this, matcher, ready_cnt, visited)) {