Index: TypeIndexDiscoveryTest.cpp
===================================================================
--- TypeIndexDiscoveryTest.cpp
+++ TypeIndexDiscoveryTest.cpp
@@ -537,9 +537,9 @@
 
 TEST_F(TypeIndexIteratorTest, ProcSym) {
   ProcSym GS(SymbolRecordKind::GlobalProcSym);
-  GS.FunctionType = TypeIndex(0x40);
+  GS.FunctionType = TypeIndex::Float32();
   ProcSym LS(SymbolRecordKind::ProcSym);
-  LS.FunctionType = TypeIndex(0x41);
+  LS.FunctionType = TypeIndex::Float64();
   writeSymbolRecords(GS, LS);
   checkTypeReferences(0, GS.FunctionType);
   checkTypeReferences(1, LS.FunctionType);
@@ -547,11 +547,20 @@
 
 TEST_F(TypeIndexIteratorTest, DataSym) {
   DataSym DS(SymbolRecordKind::GlobalData);
-  DS.Type = TypeIndex(0x40);
+  DS.Type = TypeIndex::Float32();
   writeSymbolRecords(DS);
   checkTypeReferences(0, DS.Type);
 }
 
+TEST_F(TypeIndexIteratorTest, RegisterSym) {
+    RegisterSym REG(SymbolRecordKind::RegisterSym);
+    REG.Index = TypeIndex::UInt32();
+    REG.Register = RegisterId::EAX;
+    REG.Name = "Target";
+    writeSymbolRecords(REG);
+    checkTypeReferences(0, REG.Index);
+}
+
 TEST_F(TypeIndexIteratorTest, CallerSym) {
   CallerSym Callees(SymbolRecordKind::CalleeSym);
   Callees.Indices.push_back(TypeIndex(1));