[Bug translator/23074] New: unhandled DW_OP operation in DWARF expression

["mcermak at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23074

            Bug ID: 23074
           Summary: unhandled DW_OP operation in DWARF expression
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
          Assignee: systemtap at sourceware dot org
          Reporter: mcermak at redhat dot com
  Target Milestone: ---

# stap --version; uname -r
Systemtap translator/driver (version 3.3/0.170, commit
release-3.2-170-g6cf36bad1fc1)
Copyright (C) 2005-2017 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
tested kernel versions: 2.6.18 ... 4.16-rc4
enabled features: AVAHI BOOST_STRING_REF DYNINST BPF JAVA PYTHON2 LIBRPM
LIBSQLITE3 LIBVIRT LIBXML2 NLS NSS READLINE
4.14.0-49.el7a.x86_64
# 
# stap -e 'probe sunrpc.clnt.call_sync {exit()}'
semantic error: while processing probe
module("sunrpc").function("rpc_call_sync@net/sunrpc/clnt.c:1064") from:
sunrpc.clnt.call_sync from: sunrpc.clnt.call_sync

semantic error: unhandled DW_OP operation in DWARF expression [0] at 0 (250:
121165, 0): identifier '$clnt' at
/usr/local/share/systemtap/tapset/linux/rpc.stp:476:28
        source:                 __xprt = rcu_dereference($clnt->cl_xprt)
                                                         ^

semantic error: unhandled DW_OP operation in DWARF expression [0] at 0 (250:
121165, 0): identifier '$clnt' at :476:28
        source:                 __xprt = rcu_dereference($clnt->cl_xprt)
                                                         ^

semantic error: unhandled DW_OP operation in DWARF expression [0] at 0 (250:
121165, 0): identifier '$clnt' at :476:28
        source:                 __xprt = rcu_dereference($clnt->cl_xprt)
                                                         ^

semantic error: unhandled DW_OP operation in DWARF expression [0] at 0 (250:
121165, 0): identifier '$clnt' at :476:28
        source:                 __xprt = rcu_dereference($clnt->cl_xprt)
                                                         ^

semantic error: unhandled DW_OP operation in DWARF expression [0] at 0 (250:
121165, 0): identifier '$clnt' at :476:28
        source:                 __xprt = rcu_dereference($clnt->cl_xprt)
                                                         ^

Pass 2: analysis failed.  [man error::pass2]
#

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