2 files changed, 6 insertions, 13 deletions
diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index 940363b126b..203bf60f340 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -706,16 +706,9 @@ def getJSToNativeConversionInfo(type, descriptorProvider, failureCode=None,
             default = "None"
         else:
             assert defaultValue.type.tag() == IDLType.Tags.domstring
-            value = "str::from_utf8(&data).unwrap().to_owned()"
+            default = '"%s".to_owned()' % defaultValue.value
             if type.nullable():
-                value = "Some(%s)" % value
-
-            default = (
-                "const data: [u8; %s] = [ %s ];\n"
-                "%s" %
-                (len(defaultValue.value) + 1,
-                 ", ".join(["'" + char + "' as u8" for char in defaultValue.value] + ["0"]),
-                 value))
+                default = "Some(%s)" % default
 
         declType = "DOMString"
         if type.nullable():
diff --git a/components/script/dom/webidls/TestBinding.webidl b/components/script/dom/webidls/TestBinding.webidl
index c6bbd8fadea..1546152acf4 100644
--- a/components/script/dom/webidls/TestBinding.webidl
+++ b/components/script/dom/webidls/TestBinding.webidl
@@ -34,7 +34,7 @@ dictionary TestDictionaryDefaults {
   unsigned long long unsignedLongLongValue = 7;
   // float floatValue = 7.0;
   // double doubleValue = 7.0;
-  DOMString stringValue = "";
+  DOMString stringValue = "foo";
   TestEnum enumValue = "bar";
   any anyValue = null;
 
@@ -49,7 +49,7 @@ dictionary TestDictionaryDefaults {
   unsigned long long? nullableUnsignedLongLongValue = 7;
   // float? nullableFloatValue = 7.0;
   // double? nullableDoubleValue = 7.0;
-  DOMString? nullableStringValue = "";
+  DOMString? nullableStringValue = "foo";
   // TestEnum? nullableEnumValue = "bar";
 };
 
@@ -224,7 +224,7 @@ interface TestBinding {
   void passOptionalUnsignedLongWithDefault(optional unsigned long arg = 6);
   void passOptionalLongLongWithDefault(optional long long arg = -12);
   void passOptionalUnsignedLongLongWithDefault(optional unsigned long long arg = 17);
-  void passOptionalStringWithDefault(optional DOMString arg = "");
+  void passOptionalStringWithDefault(optional DOMString arg = "x");
   void passOptionalEnumWithDefault(optional TestEnum arg = "foo");
   // void passOptionalUnionWithDefault(optional (HTMLElement or long) arg = 9);
   // void passOptionalUnion2WithDefault(optional(Event or DOMString)? data = "foo");
@@ -259,7 +259,7 @@ interface TestBinding {
   void passOptionalNullableUnsignedLongLongWithNonNullDefault(optional unsigned long long? arg = 7);
   // void passOptionalNullableFloatWithNonNullDefault(optional float? arg = 0.0);
   // void passOptionalNullableDoubleWithNonNullDefault(optional double? arg = 0.0);
-  void passOptionalNullableStringWithNonNullDefault(optional DOMString? arg = "");
+  void passOptionalNullableStringWithNonNullDefault(optional DOMString? arg = "x");
   // void passOptionalNullableEnumWithNonNullDefault(optional TestEnum? arg = "foo");
   // void passOptionalNullableUnionWithNonNullDefault(optional (HTMLElement or long)? arg = 7);
   // void passOptionalNullableUnion2WithNonNullDefault(optional (Event or DOMString)? data = "foo");