diff --git a/lib/AST/ASTDumper.cpp b/lib/AST/ASTDumper.cpp
index f0689c129f335..6613424422052 100644
--- a/lib/AST/ASTDumper.cpp
+++ b/lib/AST/ASTDumper.cpp
@@ -2131,9 +2131,9 @@ namespace {
       printFlag(!ED->hasBeenBound(), "unbound");
       if (ED->hasBeenBound()) {
         printTypeField(ED->getExtendedType(), Label::optional("extended_type"));
-      } else {
+      } else if (auto *extTypeRepr = ED->getExtendedTypeRepr()) {
         printNameRaw([&](raw_ostream &OS) {
-          ED->getExtendedTypeRepr()->print(OS);
+          extTypeRepr->print(OS);
         }, Label::optional("extended_type"));
       }
       printCommonPost(ED);
diff --git a/validation-test/compiler_crashers_2_fixed/empty_extension_print.swift b/validation-test/compiler_crashers_2_fixed/empty_extension_print.swift
new file mode 100644
index 0000000000000..74d18ab5d483a
--- /dev/null
+++ b/validation-test/compiler_crashers_2_fixed/empty_extension_print.swift
@@ -0,0 +1,2 @@
+// RUN: not %target-swift-frontend %s -dump-parse
+extension {}