PreParser scope analysis: sloppy block funcs.

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 7f859d2bbe8cc741a734600041d11f8f47a3e0c1..1dae5e9b6658e85b1681f984c5fd4f0c6b7e02b1 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -144,6 +144,10 @@ PreParser::PreParseResult PreParser::PreParseFunction(
   LazyParsingResult result = ParseStatementListAndLogFunction(
       &formals, has_duplicate_parameters, may_abort, ok);
 
+  if (is_sloppy(function_scope->language_mode())) {
+    function_scope->HoistSloppyBlockFunctions(nullptr);
+  }
+
   use_counts_ = nullptr;
   track_unresolved_variables_ = false;
 
@@ -232,6 +236,10 @@ PreParser::Expression PreParser::ParseFunctionLiteral(
   // Parsing the body may change the language mode in our scope.
   language_mode = function_scope->language_mode();
 
+  if (is_sloppy(language_mode)) {
+    function_scope->HoistSloppyBlockFunctions(nullptr);
+  }
+
   // Validate name and parameter names. We can do this only after parsing the
   // function, since the function can declare itself strict.
   CheckFunctionName(language_mode, function_name, function_name_validity,