[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-123-g3af79ea

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-123-g3af79ea

[jistone]

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- Log -----------------------------------------------------------------
commit 3af79eaaba1d8c68558c77f9a2d72c57fa4b2c6c
Author: Josh Stone <jistone@redhat.com>
Date:   Thu Feb 25 16:30:48 2010 -0800

    Ensure that @defined()==1 goes the right way
    
    We need to poison the false case of valid "@defined(x)?x:y", so we know
    that the @defined is correctly leading to the true case only.
    
    * testsuite/semok/thirtysix.stp: poison false in valid cases.

commit b7aedf26f105793793c66c39c85abe76e1510e66
Author: Josh Stone <jistone@redhat.com>
Date:   Thu Feb 25 16:20:50 2010 -0800

    Expand @defined to support more cases
    
    * tapsets.cxx (var_expanding_visitor::visit_defined_op): If no error was
      raised or replacement made on a target_symbol, then its @defined state
      is still indeterminate.  Some later pass (like @cast) might handle it.
    * elaborate.cxx (const_folder::visit_defined_op): Squash any escapees.
    * testsuite/semok/thirtysix.stp: Add more variants.

-----------------------------------------------------------------------

Summary of changes:
 elaborate.cxx                 |   15 +++++++++++++++
 tapsets.cxx                   |    7 ++++++-
 testsuite/semok/thirtysix.stp |   27 ++++++++++++++++++++-------
 3 files changed, 41 insertions(+), 8 deletions(-)


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systemtap: system-wide probe/trace tool