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Re: Summary of nightly testing 20061016 (failed to retrieve return value location)

From: William Cohen <wcohen at redhat dot com>
To: "Nguyen, Thang P" <thang dot p dot nguyen at intel dot com>
Cc: systemtap at sourceware dot org
Date: Wed, 18 Oct 2006 15:25:56 -0400
Subject: Re: Summary of nightly testing 20061016 (failed to retrieve return value location)
References: <9AE298E00BCF7B469C04BE82FCE78B8701AC14BF@scsmsx414.amr.corp.intel.com>

Nguyen, Thang P wrote:

Hi Will,

Sorry for the confusion. The test I used

./testsuite/systemtap.samples/tcptest.exp (tcptest.stp)

Occasionally it fails due to TCP traffic, but not "$return" error.

Thang

The problem is due to shared libraries. Need to set up so looks for shared libraries in when running the tests. Below demonstrates the problem.

$ LD_LIBRARY_PATH=/home/wcohen/systemtap_write/obj/lib-elfutils:/home/wcohen/systemtap_write/obj/lib-elfutils/systemtap:$LD_LIBRARY_PATH ./stap ../src/testsuite/systemtap.samples/tcptest.stp

Okay the following works:

$ LD_LIBRARY_PATH=/home/wcohen/systemtap_write/intall2/lib/systemtap ./stap ../src/testsuite/systemtap.samples/tcptest.stp

This does not work:

$ ./stap ../src/testsuite/systemtap.samples/tcptest.stp semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:129:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:159:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:129:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:159:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:129:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:159:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:129:9 semantic error: failed to retrieve return value location: identifier '$return' at /home/wcohen/systemtap_write/intall2/share/systemtap/tapset/tcp.stp:159:9 Pass 2: analysis failed. Try again with more '-v' (verbose) options.

-Will

References:
- RE: Summary of nightly testing 20061016 (failed to retrieve return value location)
  - From: Nguyen, Thang P

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