findsegfaults.py

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#!/usr/bin/env python

import sys, commands, tempfile
from optparse import OptionParser

parser = OptionParser(usage="usage: %prog")
parser.add_option("--start-from", dest="startFrom", default=None, metavar="CLASS", help="")
parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False, help="")
parser.add_option("-k", "--keep", action="store_true", dest="keep", default=False, help="")
(options, args) = parser.parse_args()

if options.keep :
  mode = "a"
else:
  mode = "w"
segfaultFile = file(args[0], mode)

logs = tempfile.NamedTemporaryFile()

lastClass = options.startFrom
ret = 1
while ret != 0:
  command = "python returnedTypeCoverage.py -v5 --exclude "+sys.argv[1]+" --log-file '"+logs.name+"'"
  if lastClass:
      command += " --start-from "+lastClass
  if options.verbose:
    print command
  (ret, output) = commands.getstatusoutput( command )
  if ret != 0:
    # find last args (the ones which caused the segfault)
    faultyArgs = None
    logs.file.seek(0)
    for l in reversed(logs.file.readlines()):
      l = l.strip()
      if faultyArgs == None and l.startswith('('):
        faultyArgs = l
      if faultyArgs != None :
	# find the last class
	if len(l) != 0 and l[0].isupper():
	  lastClass = l
	  break
    print repr(faultyArgs)
    segfaultFile.write(faultyArgs+"\n")
    segfaultFile.flush()