elementAt().getAttribute() works in debug mode but won't compile

[mwpierce63]

When I use the following line in debug mode or compile a debug build it works fine but when I try to make a profile or release build the consumes all memory then crashes. Here's a snippet:

// Open up the xml file of recipes
    String recipesXML = await rootBundle.loadString('xmlfiles/recipes.xml');
    // Open up the xml parser and parse in the recipes
    xml.XmlDocument recipebook = xml.parse(recipesXML);
    // get an iterator that can walk through the list of recipes
    Iterable<xml.XmlElement> recipeObjs = recipebook.findAllElements('RcpE');
    Iterable<xml.XmlElement> subObjs;
 for (int idx = 0; idx < numRecipes; idx++) {
      recipes.add(new Recipe.empty());
      recipes.elementAt(idx).name =
          recipeObjs.elementAt(idx).getAttribute("name").toString();
      recipes.elementAt(idx).author =
          recipeObjs.elementAt(idx).getAttribute("author").toString();
      recipes.elementAt(idx).imagePath = 'photos/' +
          recipes
              .elementAt(idx)
              .name
              .replaceAll(' ', '_')
              .replaceAll('&', 'and')
              .replaceAll('-', '_')
              .replaceAll("'", '')
              .replaceAll('__', '_')
              .replaceAll(',', '')
              .toLowerCase() +
          '.jpg'; 
      // get servings
      subObjs = recipeObjs.elementAt(idx).findElements('Serv');
//      THE BELOW LINE CAUSES RELEASE or PROFILE BUILDS TO FAIL
      recipes.elementAt(idx).servings =
          int.tryParse(subObjs.elementAt(0).getAttribute("qty")) ?? 1;

[renggli]

I think you should report this to the Flutter bug-tracker, assuming that you are talking about Flutter and this happens during compile-time? Also, it would help if you could provide a self-contained minimal example, because with the provided code I cannot reproduce the problem (numRecipes is not defined, the xml file does not exist, etc.).