BOFH gcc compiler - see http://bofh.ntk.net/BOFH/0000/bastard11.php

bastardgcc.py

#!/usr/bin/env python

import os
import sys
import random
import hashlib
import tempfile
import subprocess
import atexit


PROBABILITY = 1
cexts = set(('c', 'cc', 'cpp', 'cxx'))


def check_drop():
    return random.randint(0, 99) < PROBABILITY


def make_problems(ofn):
    digest = hashlib.new('md5')
    digest.update(open(ofn).read())
    random.seed(digest.hexdigest())

    ext = ofn.rsplit('.', 1)[-1]

    fd, name = tempfile.mkstemp(suffix='.%s' % ext, dir='.')
    atexit.register(lambda fn: os.remove(fn), name)
    with os.fdopen(fd, 'w') as outf:
        with open(ofn) as inf:
            for line in open(ofn):
                if not check_drop():
                    outf.write(line)

    return name


# Parse arguments for C/C++ files
args = list(sys.argv)
c_files = [(i, x) for i, x in enumerate(sys.argv) if x.rsplit('.', 1)[-1] in cexts]

# Copy files to temp and introduce problems
replacements = {}
for index, filename in c_files:
    replacements[filename] = make_problems(filename)
    args[index] = replacements[filename]

pipe = subprocess.Popen(['/usr/bin/%s' % os.path.basename(sys.argv[0])] + args[1:], stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd=os.getcwd(), env=os.environ)
rc = pipe.poll()

out = pipe.stdout.read()
err = pipe.stderr.read()

for inf, outf in replacements.items():
    out = out.replace(outf, inf)
    err = err.replace(outf, inf)

sys.stdout.write(out)
sys.stderr.write(err)

exit(rc)