[lldb-dev] [Bug 15039] New: lldb.SBProcess.GetSTDOUT() returns empty string instead of inferior output

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15039

             Bug #: 15039
           Summary: lldb.SBProcess.GetSTDOUT() returns empty string
                    instead of inferior output
           Product: lldb
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: All Bugs
        AssignedTo: lldb-dev at cs.uiuc.edu
        ReportedBy: daniel.malea at intel.com
    Classification: Unclassified


When using the python API to debug an inferior on Linux,
SBProcess.GetSTDOUT(1000) returns an empty string instead of what the
subprocess writes to the stdout stream.

I verified the subprocess is flushing the output both by setting stdout to be
unbuffered, and with an explicit "fflush(stdout)" but LLDB is not exposing this
output via the python API.

To reproduce, remove the @expectedFailureLinux decorator from
TestChangeValueAPI.py and run:

python dotest.py --executable <path-to-lldb> python_api/value/change_value

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