Changes in directory llvm/lib/CodeGen/SelectionDAG:
ScheduleDAGList.cpp updated: 1.59 -> 1.60
---
Log message:
When a priority_queue is empty, the behavior of top() operator is
non-deterministic. Returns NULL when it's empty!
---
Diffs of the changes: (+1 -0)
ScheduleDAGList.cpp | 1 +
1 files changed, 1 insertion(+)
Index: llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp:1.59
llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp:1.60
--- llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp:1.59 Fri May 12
01:33:48 2006
+++ llvm/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp Tue May 30 13:04:34 2006
@@ -356,6 +356,7 @@
}
SUnit *pop() {
+ if (empty()) return NULL;
SUnit *V = Queue.top();
Queue.pop();
return V;
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