From: Jim Laskey <jlaskey@mac.com>
Date: Wed, 8 Nov 2006 14:16:39 +0000 (+0000)
Subject: Wasn't handling case of when machine move labels were undefined.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b8244e4f6be4dd49817c95a433a5188a5e5c7fd9;p=oota-llvm.git

Wasn't handling case of when machine move labels were undefined.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31548 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/CodeGen/MachineDebugInfo.h b/include/llvm/CodeGen/MachineDebugInfo.h
index 7b6386730b7..46078d25efa 100644
--- a/include/llvm/CodeGen/MachineDebugInfo.h
+++ b/include/llvm/CodeGen/MachineDebugInfo.h
@@ -1046,13 +1046,18 @@ public:
   /// RemapLabel - Indicate that a label has been merged into another.
   ///
   void RemapLabel(unsigned OldLabelID, unsigned NewLabelID) {
+    assert(0 < OldLabelID && OldLabelID <= LabelIDList.size() &&
+          "Old debug label ID out of range.");
+    assert(NewLabelID <= LabelIDList.size() &&
+          "New debug label ID out of range.");
     LabelIDList[OldLabelID - 1] = NewLabelID;
   }
   
   /// MappedLabel - Find out the label's final ID.  Zero indicates deletion.
   /// ID != Mapped ID indicates that the label was folded into another label.
   unsigned MappedLabel(unsigned LabelID) const {
-    return LabelIDList[LabelID - 1];
+    assert(LabelID <= LabelIDList.size() && "Debug label ID out of range.");
+    return LabelID ? LabelIDList[LabelID - 1] : 0;
   }
 
   /// RecordSource - Register a source file with debug info. Returns an source