[Bug translator/4301] New: mark_derived_probe::join_group incomplete

["mkg at vt dot edu" <sourceware-bugzilla@sourceware.org>]

I am exploring the Myrinet 10G MX driver with SystemTap. I created two markers 
called mx_ether_xmit_top and mx_ether_xmit_bottom at the top and bottom of 
static function mx_ether_xmit in mx-1.2.0i/driver/linux/mx_ether.c, part of 
module mx_driver.

Instead of being able to probe at the marks, there are semantic errors: 
"semantic error: incomplete: keyword at <input>:1:1" with "stap -e 'probe 
module("mx_driver").mark ("mx_ether_xmit_top") {exit}'". Surprisingly, there is 
a different error when running "stap -e 'probe module("mx_driver").mark 
("mx_ether_xmit") {exit}'": "semantic error: no match for probe point while 
resolving probe point module("mx_driver").mark("mx_ether_xmit")" which is the 
error I expect to see since there are no marks by that name. Thus the mark is 
being found by the first command line.

The problem appears to be an incomplete implementation guarded by throwing 
semantic error "incomplete" in mark_derived_probe::join_group at 
tapsets.cxx:4382.

-- 
           Summary: mark_derived_probe::join_group incomplete
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mkg at vt dot edu


http://sourceware.org/bugzilla/show_bug.cgi?id=4301

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