Trouble with Marshal

ruby-talk
1

I'm trying to use Marshal on Windows to cache some results that take a
while to generate, and I'm getting some bad results.

Using the following simple code...
  all = RANGE.map{ |i| `p4 describe -s #{i}` }
  File.open( 'desc.marshal', 'w+' ){ |f| f << Marshal.dump(all) }
  all = Marshal.load( IO.read( 'desc.marshal' ) )
...I can get different results depending on which range of changelists I
ask for.

  Sometimes it's:
    in `load': marshal data too short (ArgumentError)

  Sometimes it's:
    in `load': undefined class/module
/SpecToolClient/SpecToolClient/ApplicationData/Catalog_525_600-670/Optio
ns/Exterior_WindshieldRetainer/ (ArgumentError)

  And sometimes it's:
    This application has requested the Runtime to terminate it in an
unusual way.
    Please contact the application's support team for more information.

I'm trying to pare it down to a simple test case. (Right now it's a 4MB
Marshal file.) As I do that, however...is there something obvious that
I'm doing wrong in the above code?

2

Wild guess, but can you try opening the file with "wb+"? The marshal format
is binary, isn't it, so the windows line ending could make a difference.

/Nick

···

On 10/26/06, Gavin Kistner <gavin.kistner@anark.com> wrote:

I'm trying to pare it down to a simple test case. (Right now it's a 4MB
Marshal file.) As I do that, however...is there something obvious that
I'm doing wrong in the above code?