Fix dangling reference

llvm-svn: 211773

2 files changed, 5 insertions, 1 deletions

diff --git a/polly/include/polly/ScopDetectionDiagnostic.h b/polly/include/polly/ScopDetectionDiagnostic.h
index f7f826bfb82..90cd7f2e99c 100644
--- a/polly/include/polly/ScopDetectionDiagnostic.h
+++ b/polly/include/polly/ScopDetectionDiagnostic.h
@@ -126,6 +126,9 @@ class RejectReason {
 private:
   const RejectReasonKind Kind;
 
+protected:
+  static const DebugLoc Unknown;
+
 public:
   RejectReasonKind getKind() const { return Kind; }
 
diff --git a/polly/lib/Analysis/ScopDetectionDiagnostic.cpp b/polly/lib/Analysis/ScopDetectionDiagnostic.cpp
index 8fde51aff2f..584f4a43299 100644
--- a/polly/lib/Analysis/ScopDetectionDiagnostic.cpp
+++ b/polly/lib/Analysis/ScopDetectionDiagnostic.cpp
@@ -118,10 +118,11 @@ void emitValidRemarks(const llvm::Function &F, const Region *R) {
 
 //===----------------------------------------------------------------------===//
 // RejectReason.
+const DebugLoc RejectReason::Unknown = DebugLoc();
 
 const llvm::DebugLoc &RejectReason::getDebugLoc() const {
   // Allocate an empty DebugLoc and return it a reference to it.
-  return *(std::make_shared<DebugLoc>().get());
+  return Unknown;
 }
 
 //===----------------------------------------------------------------------===//