ILoGM

static void *rb_rdiscount_to_html_no_gvl(void * param_block){
  rb_discount_to_html_param_block *block = (rb_discount_to_html_param_block*)param_block;
  block->doc = mkd_string(block->input, block->input_length, block->flags);
  if(mkd_compile(block->doc, block->flags)){
    block->szres = mkd_document(block->doc, &block->res);
  }
  return NULL;
}

/*wrapper function. only exists because we need to pass a function pointer to rb_ensure*/

ILoGM

class ActiveRecord::Migrator
  def migrate(&block)
    current = migrations.detect { |m| m.version == current_version }
    target = migrations.detect { |m| m.version == @target_version }

    if target.nil? && @target_version && @target_version > 0
      raise UnknownMigrationVersionError.new(@target_version)
    end

    start = up? ? 0 : (migrations.index(current) || 0)

ILoGM

# HACK:
# There is a deprecation of '-i' flag for pg_dump command, appeared in Postgres 9.5
# The following rake task overrides the default `rake db:structure:dump` to be able to dump db structure without upgrading ActiveRecord.
# @ref: https://github.com/rails/rails/issues/23030#issuecomment-171084067

require 'shellwords'

module ActiveRecord
  module Tasks # :nodoc:
    class PostgreSQLDatabaseTasks # :nodoc: