new_contents: #!/usr/bin/python
  # Copyright (c) 2013 The Native Client Authors. All rights reserved.
  # Use of this source code is governed by a BSD-style license that can be
  # found in the LICENSE file.
  #
  # This code uses csmith to generate a large amount of .c files, change the entry
  # point of each from main to entry_N and then create a new main.c file that
  # would be linked to all of them. csmith needs to be built in CSMITH_HOME.
  # This is used to generate large executables from csmith.
  #
  from __future__ import print_function
  import os, fileinput, re, sys
  
  CSMITH_HOME = os.environ['CSMITH_HOME']
  CSMITH_EXE = CSMITH_HOME + '/src/csmith'
  DEFAULT_N = 100
  
  def shellrun(s):
    print(s)
    os.system(s)
  
  def main(args):
    if len(args) > 0:
      N = int(args[0])
    else:
      N = DEFAULT_N
  
    n = 0
    while n < N:
      cobjname = '/tmp/entry_obj_{}.c'.format(n)
      entryname = 'entry_{}'.format(n)
      shellrun(CSMITH_EXE + ' --no-argc --max-funcs 40 --no-volatiles' +
                            ' --no-structs > ' + cobjname)
  
      # Retry if the file is too small
      if os.path.getsize(cobjname) < 400 * 1000:
        print('Redoing...')
      else:
        for line in fileinput.input(cobjname, inplace=True):
          fixed_line = re.sub('int main', 'int ' + entryname, line)
          sys.stdout.write(fixed_line)
        n += 1
  
    print('Creating main file')
    with open('/tmp/main.c', 'w') as of:
      for n in range(N):
        of.write('int entry_{}(void);\n'.format(n))
      of.write('int main(void) {\n')
      for n in range(N):
        of.write('  entry_{}();\n'.format(n))
      of.write('  return 0;\n}\n')
  
  if __name__ == '__main__':
    main(sys.argv[1:])
  
  
subject: Add a script for driving csmith to generate large compilation inputs.