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-rw-r--r--lib/Analysis/DataStructure/CompleteBottomUp.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Analysis/DataStructure/CompleteBottomUp.cpp b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
index 95c9d3cf5d..87b96b266a 100644
--- a/lib/Analysis/DataStructure/CompleteBottomUp.cpp
+++ b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
@@ -71,7 +71,8 @@ bool CompleteBUDataStructures::run(Module &M) {
unsigned NextID = 1;
if (Function *Main = M.getMainFunction()) {
- calculateSCCGraphs(getOrCreateGraph(*Main), Stack, NextID, ValMap);
+ if (!Main->isExternal())
+ calculateSCCGraphs(getOrCreateGraph(*Main), Stack, NextID, ValMap);
} else {
std::cerr << "CBU-DSA: No 'main' function found!\n";
}