[Bug translator/12612] New: Generate modules compatible with older staprun

[przemyslaw at pawelczyk dot it]

http://sourceware.org/bugzilla/show_bug.cgi?id=12612

           Summary: Generate modules compatible with older staprun
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: minor
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: przemyslaw@pawelczyk.it


Older staprun is not able to work properly with recent stap modules. Loading
module created by latest version from git using staprun 1.2 gives following
kernel messages (repeated many times):

Systemtap Error at _stp_do_relocation:24 STP_RELOCATE message size mismatch
(264 vs 136)

Using old staprun is a convenient scenario when admin/developer writes script
and deploys resulting module on many machines. Some distributions already have
systemtap in their repositories, but it's usually not the recent version.

The solution obviously should not require updating old staprun binaries. Maybe
another option similar to --compatibility could be added? There is no point in
supporting ancient versions, but 1.2 should not be treated as such.

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