Original bug ID: 5793
Reporter: @ppedrot
Assigned to: @xclerc
Status: closed (set by @xavierleroy on 2015-12-11T18:18:36Z)
Resolution: fixed
Priority: normal
Severity: minor
Fixed in version: 4.00.2+dev
Category: standard library
Related to: #5977

Bug description

When marshalling integers between 32 and 64-bits architectures, integers which are inbetween 2^31 and 2^32 - 1 are treated in a inconsistent way.

In particular, 64-bit architectures marshal them as 32-bit integers, while 32-bit architectures unmarshal them as if they were only 31-bit long, thus resulting in an silent overflow.

Steps to reproduce

On a 64-bit arch, retrieve the string produced by the following command:

Marshal.to_string (1 lsl 30) []

Then on a 32-bit arch, unmarshal the previous string. This results in an overflow.