Author pitrou
Recipients barry, christian.heimes, kristjan.jonsson, pitrou, ronaldoussoren, serhiy.storchaka, vstinner
Date 2013-10-11.14:34:55
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In-reply-to <1381500899.49.0.0614432256474.issue19219@psf.upfronthosting.co.za>
Content
> I ran into this when developing version 3.  The reason is that while
> the marshal format includes the version information in its header,
> it isn't actually verified on loading. IIRC.  You specify the
> expected format to the function, or something like that.  So, if you
> don't do this, you get errors when loading previously generated .pyc
> files.

Exactly (I also tried this :-)). The problem is the version number
is *outside* of the marshal format: e.g. it's in the pyc file header.
When freezing a module (see frozen.c), the version number isn't included.
So our freedom is quite limited here: we have to support legacy frozen
modules.
History
Date User Action Args
2013-10-11 14:34:55pitrousetrecipients: + pitrou, barry, ronaldoussoren, kristjan.jonsson, vstinner, christian.heimes, serhiy.storchaka
2013-10-11 14:34:55pitroulinkissue19219 messages
2013-10-11 14:34:55pitroucreate