Calls to PyErr_Print should be followed by fflush().

• Key: MODPYTHON-41
• Type: Improvement
• Status: Closed
• Resolution: Fixed
• Priority: Major
• Assignee: Nicolas Lehuen
• Reporter: Graham Dumpleton
• Component/s: core
• Affects Version/s: 3.1.4
• Fix Version/s: 3.2.7

Description

In mod_python.c there are a few places where PyErr_Print() is called. The output of this
function is sent to stderr and not to the Apache log functions. The output does make its
way into the Apache error log file eventually, but not straight away due to buffering
issues. In order to ensure the output gets the logs straight away, a call should be made
to fflush(stderr) after calling PyErr_Print(). Ie.,

        PyErr_Print();
        fflush(stderr);

This will ensure that relevant lower level Python errors appear adjacent to any error message
logged by mod_python to the error log file.