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Don't crash when encountering a BasicBlock that hasn't been registered yet.
author
Nick Lewycky
<nicholas@mxc.ca>
Sun, 8 Apr 2007 01:02:12 +0000
(
01:02
+0000)
committer
Nick Lewycky
<nicholas@mxc.ca>
Sun, 8 Apr 2007 01:02:12 +0000
(
01:02
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35756
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/VMCore/Dominators.cpp
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diff --git
a/lib/VMCore/Dominators.cpp
b/lib/VMCore/Dominators.cpp
index 9bd51bf4d91d59c89a79c982b5bc6d8164c066f7..b3e18e8e3ef52cc71c442fa61f4c495adfa5a2d8 100644
(file)
--- a/
lib/VMCore/Dominators.cpp
+++ b/
lib/VMCore/Dominators.cpp
@@
-935,8
+935,9
@@
void ETForestBase::updateDFSNumbers()
for (df_iterator<BasicBlock*> I = df_begin(Roots[i]),
E = df_end(Roots[i]); I != E; ++I) {
BasicBlock *BB = *I;
- if (!getNode(BB)->hasFather())
- getNode(BB)->assignDFSNumber(dfsnum);
+ ETNode *ETN = getNode(BB);
+ if (ETN && !ETN->hasFather())
+ ETN->assignDFSNumber(dfsnum);
}
SlowQueries = 0;
DFSInfoValid = true;