diff --git a/mlir/lib/IR/AsmPrinter.cpp b/mlir/lib/IR/AsmPrinter.cpp
--- a/mlir/lib/IR/AsmPrinter.cpp
+++ b/mlir/lib/IR/AsmPrinter.cpp
@@ -381,7 +381,9 @@
   // Print all of the attribute kind aliases.
   for (auto &kindAlias : attrKindToAlias) {
     auto &aliasAttrsPair = kindAlias.second;
-    for (unsigned i = 0, e = aliasAttrsPair.second.size(); i != e; ++i)
+    if (aliasAttrsPair.second.empty())
+      continue;
+    for (unsigned i = 0; i != aliasAttrsPair.second.size(); ++i)
       printAlias(aliasAttrsPair.first, aliasAttrsPair.second[i], i);
     os << newLine;
   }