1 files changed, 9 insertions, 1 deletions
diff --git a/include/llvm/ADT/SmallVector.h b/include/llvm/ADT/SmallVector.h
index 3be1787..a76e9c7 100644
--- a/include/llvm/ADT/SmallVector.h
+++ b/include/llvm/ADT/SmallVector.h
@@ -712,25 +712,33 @@ public:
 /// members are required.
 template <typename T>
 class SmallVector<T,0> : public SmallVectorImpl<T> {
+  // SmallVector doesn't like growing from zero capacity.  As a
+  // temporary workaround, avoid changing the growth algorithm by
+  // forcing capacity to be at least 1 in the constructors.
+
 public:
   SmallVector() : SmallVectorImpl<T>(0) {
+    this->reserve(1); // workaround
   }
 
   explicit SmallVector(unsigned Size, const T &Value = T())
     : SmallVectorImpl<T>(0) {
-    this->reserve(Size);
+    this->reserve(Size ? Size : 1); // workaround
     while (Size--)
       this->push_back(Value);
   }
 
   template<typename ItTy>
   SmallVector(ItTy S, ItTy E) : SmallVectorImpl<T>(0) {
+    if (S == E) this->reserve(1); // workaround
     this->append(S, E);
   }
 
   SmallVector(const SmallVector &RHS) : SmallVectorImpl<T>(0) {
     if (!RHS.empty())
       SmallVectorImpl<T>::operator=(RHS);
+    else
+      this->reserve(1); // workaround
   }
 
   const SmallVector &operator=(const SmallVector &RHS) {