* compile.c (compile_array, compile_array_):

  Divide big array (or hash) literals into several blocks and
  concatetene them.  There was a problem that a big array (hash)
  literal causes SystemStackError exception (stack overflow)
  because VM push all contents of the literal onto VM stack to
  make an array (or hash).  To solve this issue, we make several
  arrays (hashes) and concatenate them to make a big array (hash)
  object.
  ??
* compile.c (iseq_compile_each, setup_args): use modified
  compile_array.
* vm.c (m_core_hash_from_ary, m_core_hash_merge_ary,
  m_core_hash_merge_ptr): added for above change.
* id.c (Init_id), parse.y: add core method ids.
* bootstraptest/test_literal.rb: add simple tests.
* bootstraptest/test_eval.rb: remove rescue clause to catch
  SystemStackError exception.
* test/ruby/test_literal.rb: add tests to check no stack overflow.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 22 insertions, 1 deletions

diff --git a/bootstraptest/test_eval.rb b/bootstraptest/test_eval.rb
index c347d50ac9..18d4d6f11f 100644
--- a/bootstraptest/test_eval.rb
+++ b/bootstraptest/test_eval.rb
@@ -316,6 +316,5 @@ assert_normal_exit %q{
   end
   begin
     eval "class C; @@h = #{hash.inspect}; end"
-  rescue SystemStackError
   end
 }, '[ruby-core:25714]'
diff --git a/bootstraptest/test_literal.rb b/bootstraptest/test_literal.rb
index ab028e2c1e..19200c1ee7 100644
--- a/bootstraptest/test_literal.rb
+++ b/bootstraptest/test_literal.rb
@@ -200,3 +200,25 @@ assert_equal 'ok', %q{
 assert_equal 'ok', %q{
   "#{}o""#{}k""#{}"
 }, '[ruby-core:25284]'
+
+assert_equal 'ok', %q{ #  long array literal
+  x = nil
+  eval "a = [#{(1..10_000).map{'x'}.join(", ")}]"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long array literal (optimized)
+  eval "a = [#{(1..10_000).to_a.join(", ")}]"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long hash literal
+  x = nil
+  eval "a = {#{(1..10_000).map{|n| "#{n} => x"}.join(', ')}}"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long hash literal (optimized)
+  eval "a = {#{(1..10_000).map{|n| "#{n} => #{n}"}.join(', ')}}"
+  :ok
+}