@@ -3720,6 +3720,27 @@ The auxiliary file is written in a standard directory for temporary files, but y
NOTE: Defined in `active_support/core_ext/file/atomic.rb`.
Extensions to `Marshal`
--------------------
### `load`
Unpatched Marshal#load doesn't call constant_missing so in order to support ActiveSupport constant autoloading load is patched using alias_method_chain.
The method accepts the same arguments as unpatched Marshal#load and the result of calling it will be the same.
For example, ActiveSupport uses this method to read from cache(in FileStore):
```ruby
File.open(file_name){|f|Marshal.load(f)}
```
If Marshal#load didn't support constant autoloading then various caching stores wouldn't too.
WARNING. If a IO (e.g. a file) is used as source it needs to respond to rewind (which a normal file does) because if an exception is raised calling the original Marshal#load the file will be exhausted.
NOTE: Defined in `active_support/core_ext/marshal.rb`.