diff --git a/dmd2/expression.h b/dmd2/expression.h
index 68fc5518..0c3d5174 100644
--- a/dmd2/expression.h
+++ b/dmd2/expression.h
@@ -1080,6 +1080,9 @@ struct SliceExp : UnaExp
     int inlineCost(InlineCostState *ics);
     Expression *doInline(InlineDoState *ids);
     Expression *inlineScan(InlineScanState *iss);
+
+    // LDC
+    virtual llvm::Constant *toConstElem(IRState *irs);
 };
 
 struct ArrayLengthExp : UnaExp
@@ -1154,6 +1157,9 @@ struct IndexExp : BinExp
     void scanForNestedRef(Scope *sc);
 
     elem *toElem(IRState *irs);
+
+    // LDC
+    virtual llvm::Constant *toConstElem(IRState *irs);
 };
 
 /* For both i++ and i--
@@ -1565,6 +1571,7 @@ struct GEPExp : UnaExp
     Expression *toLvalue(Scope *sc, Expression *e);
 
     elem *toElem(IRState *irs);
+    llvm::Constant *toConstElem(IRState *irs);
 };
 
 #endif
diff --git a/gen/toir.cpp b/gen/toir.cpp
index d6edaade..8793ca21 100644
--- a/gen/toir.cpp
+++ b/gen/toir.cpp
@@ -2712,7 +2712,7 @@ STUB(TupleExp);
 STUB(SymbolExp);
 #endif
 
-#define CONSTSTUB(x) LLConstant* x::toConstElem(IRState * p) {error("const Exp type "#x" not implemented: '%s' type: '%s'", toChars(), type->toChars()); fatal(); return NULL; }
+#define CONSTSTUB(x) LLConstant* x::toConstElem(IRState * p) {error("non-const expression '%s' or const Exp type "#x" not implemented", toChars()); fatal(); return NULL; }
 CONSTSTUB(Expression);
 CONSTSTUB(GEPExp);
 CONSTSTUB(SliceExp);