Only create ScopeInfos for eagerly parsed scopes.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 2379d5f311d607ca0d70a2ee2e736f95982ab8d1..b73cdb89bafd77b9beea3cc7a53dfa051030a658 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -3151,6 +3151,7 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
         bookmark.Reset();
         // Trigger eager (re-)parsing, just below this block.
         is_lazily_parsed = false;
+        this->scope()->set_is_lazily_parsed(false);
 
         // This is probably an initialization function. Inform the compiler it
         // should also eager-compile this function, and that we expect it to be
@@ -3263,6 +3264,7 @@ Parser::LazyParsingResult Parser::SkipLazyFunctionBody(
   int function_block_pos = position();
   DeclarationScope* scope = this->scope()->AsDeclarationScope();
   DCHECK(scope->is_function_scope());

[jochen (gone - plz use gerrit), 2016/09/16 13:16:12]

Marja raised the concern that the this->scope() might not be the function scope
if the function has complex parameters, however, this DCHECK() says it is

+  scope->set_is_lazily_parsed(true);
   if (consume_cached_parse_data() && !cached_parse_data_->rejected()) {
     // If we have cached data, we use it to skip parsing the function body. The
     // data contains the information we need to construct the lazy function.