Index: ELF/SymbolTable.h
===================================================================
--- ELF/SymbolTable.h
+++ ELF/SymbolTable.h
@@ -103,8 +103,9 @@
   void assignWildcardVersion(SymbolVersion Ver, uint16_t VersionId);
 
   struct SymIndex {
-    int32_t Idx : 31;
-    uint32_t Traced : 1;
+    SymIndex(int Idx, bool Traced) : Idx(Idx), Traced(Traced) {}
+    int Idx : 31;
+    unsigned Traced : 1;
   };
 
   // The order the global symbols are in is not defined. We can use an arbitrary
Index: ELF/SymbolTable.cpp
===================================================================
--- ELF/SymbolTable.cpp
+++ ELF/SymbolTable.cpp
@@ -240,13 +240,13 @@
     Name = Name.take_front(Pos);
 
   auto P = Symtab.insert(
-      {CachedHashStringRef(Name), SymIndex{(int)SymVector.size(), false}});
+      {CachedHashStringRef(Name), SymIndex((int)SymVector.size(), false)});
   SymIndex &V = P.first->second;
   bool IsNew = P.second;
 
   if (V.Idx == -1) {
     IsNew = true;
-    V = SymIndex{(int)SymVector.size(), true};
+    V = SymIndex((int)SymVector.size(), true);
   }
 
   Symbol *Sym;