[QBS] Build graph QDataStream format (IMPORTANT!)

Jake Thomas Petroules jake.petroules at petroules.com
Mon Mar 18 15:35:20 CET 2013

Just as importantly, why is this crashing instead of failing gracefully with an error message?
Jake Petroules
Chief Technology Officer
Petroules Corporation ยท www.petroules.com
Email: jake.petroules at petroules.com

On Mar 18, 2013, at 10:10 AM, Christian Kandeler <christian.kandeler at digia.com> wrote:

> Hi,
> we only noticed today that we had completely forgotten to version our 
> build graph files with respect to the version of the QDataStream format 
> which is used to read and write it. This means that if you built your 
> project with qbs compiled against Qt4 and then built it again with qbs 
> compiled against Qt5 (or vice versa), qbs would crash.
> We have now fixed the QDataStream format version at the one used by Qt 
> 4.8.0, which is the lowest Qt version which you can use to build qbs. 
> While this solves the aforementioned problem, it also means that loading 
> existing build graphs might now fail, most likely with a crash. 
> Therefore, when using qbs after patch 9df9b0e8, you must manually delete 
> all existing build graphs if they were written by an older qbs built 
> against Qt > 4.8.0.
> Sorry for the inconvenience,
> Christian
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