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-rw-r--r--lib/VMCore/Dominators.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/VMCore/Dominators.cpp b/lib/VMCore/Dominators.cpp
index 74c585fd6a..2fbb6e4beb 100644
--- a/lib/VMCore/Dominators.cpp
+++ b/lib/VMCore/Dominators.cpp
@@ -325,6 +325,8 @@ void DominatorTreeBase::updateDFSNumbers()
/// isReachableFromEntry - Return true if A is dominated by the entry
/// block of the function containing it.
const bool DominatorTreeBase::isReachableFromEntry(BasicBlock* A) {
+ assert (!isPostDominator()
+ && "This is not implemented for post dominators");
return dominates(&A->getParent()->getEntryBlock(), A);
}