diff --git a/gen/llvmhelpers.cpp b/gen/llvmhelpers.cpp
index d7170fe3..0819f2ed 100644
--- a/gen/llvmhelpers.cpp
+++ b/gen/llvmhelpers.cpp
@@ -1916,7 +1916,8 @@ DValue* DtoSymbolAddress(const Loc& loc, Type* type, Declaration* decl)
             fatal();
         }
         DtoResolveFunction(fdecl);
-        return new DFuncValue(fdecl, fdecl->ir.irFunc->func);
+        assert(fdecl->llvmInternal == LLVMva_arg || fdecl->ir.irFunc);
+        return new DFuncValue(fdecl, fdecl->ir.irFunc ? fdecl->ir.irFunc->func : 0);
     }
 
     if (SymbolDeclaration* sdecl = decl->isSymbolDeclaration())
@@ -2028,4 +2029,4 @@ FuncDeclaration* getParentFunc(Dsymbol* sym, bool stopOnStatic) {
     }
 
     return (parent ? parent->isFuncDeclaration() : NULL);
-}
\ No newline at end of file
+}