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Channagoud Kadabi1a82c2b2016-07-01 12:28:20 -07001#! /usr/bin/env python2
2# -*- coding: utf-8 -*-
3
4# Copyright (c) 2011-2016, The Linux Foundation. All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are met:
8# * Redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer.
10# * Redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution.
13# * Neither the name of The Linux Foundation nor
14# the names of its contributors may be used to endorse or promote
15# products derived from this software without specific prior written
16# permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21# NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30# Invoke gcc, looking for warnings, and causing a failure if there are
31# non-whitelisted warnings.
32
33import errno
34import re
35import os
36import sys
37import subprocess
38
39# Note that gcc uses unicode, which may depend on the locale. TODO:
40# force LANG to be set to en_US.UTF-8 to get consistent warnings.
41
42allowed_warnings = set([
43 "core.c:144",
44 "inet_connection_sock.c:430",
45 "inet_connection_sock.c:467",
46 "inet6_connection_sock.c:89",
47 ])
48
49# Capture the name of the object file, can find it.
50ofile = None
51
52warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''')
53def interpret_warning(line):
54 """Decode the message from gcc. The messages we care about have a filename, and a warning"""
55 line = line.rstrip('\n')
56 m = warning_re.match(line)
57 if m and m.group(2) not in allowed_warnings:
Shadab Naseemd733f8f2019-02-20 12:57:27 +053058 print >> sys.stderr, "error, forbidden warning:", m.group(2)
Channagoud Kadabi1a82c2b2016-07-01 12:28:20 -070059
60 # If there is a warning, remove any object if it exists.
61 if ofile:
62 try:
63 os.remove(ofile)
64 except OSError:
65 pass
66 sys.exit(1)
67
68def run_gcc():
69 args = sys.argv[1:]
70 # Look for -o
71 try:
72 i = args.index('-o')
73 global ofile
74 ofile = args[i+1]
75 except (ValueError, IndexError):
76 pass
77
78 compiler = sys.argv[0]
79
80 try:
81 proc = subprocess.Popen(args, stderr=subprocess.PIPE)
82 for line in proc.stderr:
Shadab Naseemd733f8f2019-02-20 12:57:27 +053083 print >> sys.stderr, line,
Channagoud Kadabi1a82c2b2016-07-01 12:28:20 -070084 interpret_warning(line)
85
86 result = proc.wait()
87 except OSError as e:
88 result = e.errno
89 if result == errno.ENOENT:
Shadab Naseemd733f8f2019-02-20 12:57:27 +053090 print >> sys.stderr, args[0] + ':',e.strerror
91 print >> sys.stderr, 'Is your PATH set correctly?'
Channagoud Kadabi1a82c2b2016-07-01 12:28:20 -070092 else:
Shadab Naseemd733f8f2019-02-20 12:57:27 +053093 print >> sys.stderr, ' '.join(args), str(e)
Channagoud Kadabi1a82c2b2016-07-01 12:28:20 -070094
95 return result
96
97if __name__ == '__main__':
98 status = run_gcc()
99 sys.exit(status)