Do not dereference end iterators. It's really bad for the asmwriter's health.

This possibly fixes PR370

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14181 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 3484d3976e3c48c1b839d5d77706ce5a287389b4..570d5b3d4f30454eff3a7f3d87674b92b12487ca 100644 (file)
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -1324,7 +1324,10 @@ int SlotMachine::getSlot(const Value *V) {
         // Return the slot number as the module's contribution to
         // the type plane plus the index in the function's contribution
         // to the type plane.
-        return MI->second.next_slot + FVI->second;
+        if (MI != mMap.end())
+          return MI->second.next_slot + FVI->second;
+        else
+          return FVI->second;
       }
     }
   }