1 files changed, 3 insertions, 1 deletions
diff --git a/bolt/lib/Passes/BinaryPasses.cpp b/bolt/lib/Passes/BinaryPasses.cpp
index 2810f723719d..ecc2c08a3032 100644
--- a/bolt/lib/Passes/BinaryPasses.cpp
+++ b/bolt/lib/Passes/BinaryPasses.cpp
@@ -636,7 +636,9 @@ Error LowerAnnotations::runOnFunctions(BinaryContext &BC) {
 Error CleanMCState::runOnFunctions(BinaryContext &BC) {
   MCContext &Ctx = *BC.Ctx;
   for (const auto &SymMapEntry : Ctx.getSymbols()) {
-    const MCSymbol *S = SymMapEntry.second;
+    const MCSymbol *S = SymMapEntry.getValue().Symbol;
+    if (!S)
+      continue;
     if (S->isDefined()) {
       LLVM_DEBUG(dbgs() << "BOLT-DEBUG: Symbol \"" << S->getName()
                         << "\" is already defined\n");