[ORC] Qualify nullptr_t.

diff --git a/llvm/include/llvm/ExecutionEngine/Orc/SymbolStringPool.h b/llvm/include/llvm/ExecutionEngine/Orc/SymbolStringPool.h
index c8462dc..a4207c2 100644 (file)
--- a/llvm/include/llvm/ExecutionEngine/Orc/SymbolStringPool.h
+++ b/llvm/include/llvm/ExecutionEngine/Orc/SymbolStringPool.h
@@ -53,7 +53,7 @@ class SymbolStringPtr {
 
 public:
   SymbolStringPtr() = default;
-  SymbolStringPtr(nullptr_t) {}
+  SymbolStringPtr(std::nullptr_t) {}
   SymbolStringPtr(const SymbolStringPtr &Other)
     : S(Other.S) {
     if (isRealPoolEntry(S))