hwg | 6461fc6 | 2015-03-04 10:46:28 +0800 | [diff] [blame] | 1 | #! /usr/bin/env python |
| 2 | # -*- coding: utf-8 -*- |
| 3 | |
| 4 | # Copyright (c) 2011-2012, 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 | |
| 33 | import errno |
| 34 | import re |
| 35 | import os |
| 36 | import sys |
| 37 | import 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 | |
| 42 | allowed_warnings = set([ |
Huang, Tao | 7a51384d | 2015-11-21 19:40:34 +0800 | [diff] [blame] | 43 | "core.c:142", # drivers/regulator/core.c:142:6: warning: unused variable 'i' |
| 44 | "posix-cpu-timers.c:1268", # kernel/time/posix-cpu-timers.c:1268:13: warning: 'now' may be used uninitialized in this function |
Huang, Tao | 4c9b02f | 2015-11-23 20:56:39 +0800 | [diff] [blame] | 45 | "af_unix.c:911", # net/unix/af_unix.c:911:20: warning: 'hash' may be used uninitialized in this function |
Huang, Tao | 7a51384d | 2015-11-21 19:40:34 +0800 | [diff] [blame] | 46 | "sunxi_sram.c:214", # drivers/soc/sunxi/sunxi_sram.c:214:24: warning: 'device' may be used uninitialized in this function |
| 47 | "ks8851.c:298", # drivers/net/ethernet/micrel/ks8851.c:298:2: warning: 'rxb[0]' may be used uninitialized in this function |
| 48 | "ks8851.c:421", # drivers/net/ethernet/micrel/ks8851.c:421:20: warning: 'rxb[0]' may be used uninitialized in this function |
| 49 | "rockchip_drm_vop.c:581", # drivers/gpu/drm/rockchip/rockchip_drm_vop.c:581:49: warning: 'vskiplines' may be used uninitialized in this function |
Huang, Tao | 3d3618d | 2015-11-24 20:43:54 +0800 | [diff] [blame] | 50 | "compat_binfmt_elf.c:58", # fs/compat_binfmt_elf.c:58:13: warning: 'cputime_to_compat_timeval' defined but not used |
Huang, Tao | f1f22ee | 2015-12-01 10:01:14 +0800 | [diff] [blame^] | 51 | "cgroup.c:2132", # kernel/cgroup.c:2132:13: warning: 'root' may be used uninitialized in this function |
| 52 | "mdp5.xml.h:1038", # drivers/gpu/drm/msm/mdp/mdp5/mdp5.xml.h:1038:16: warning: 'uv_filter' may be used uninitialized in this function |
hwg | 6461fc6 | 2015-03-04 10:46:28 +0800 | [diff] [blame] | 53 | ]) |
| 54 | |
| 55 | # Capture the name of the object file, can find it. |
| 56 | ofile = None |
| 57 | |
| 58 | warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''') |
| 59 | def interpret_warning(line): |
| 60 | """Decode the message from gcc. The messages we care about have a filename, and a warning""" |
| 61 | line = line.rstrip('\n') |
| 62 | m = warning_re.match(line) |
| 63 | if m and m.group(2) not in allowed_warnings: |
| 64 | print "error, forbidden warning:", m.group(2) |
| 65 | |
| 66 | # If there is a warning, remove any object if it exists. |
| 67 | if ofile: |
| 68 | try: |
| 69 | os.remove(ofile) |
| 70 | except OSError: |
| 71 | pass |
| 72 | sys.exit(1) |
| 73 | |
| 74 | def run_gcc(): |
| 75 | args = sys.argv[1:] |
| 76 | # Look for -o |
| 77 | try: |
| 78 | i = args.index('-o') |
| 79 | global ofile |
| 80 | ofile = args[i+1] |
| 81 | except (ValueError, IndexError): |
| 82 | pass |
| 83 | |
| 84 | compiler = sys.argv[0] |
| 85 | |
| 86 | try: |
| 87 | proc = subprocess.Popen(args, stderr=subprocess.PIPE) |
| 88 | for line in proc.stderr: |
| 89 | print line, |
| 90 | interpret_warning(line) |
| 91 | |
| 92 | result = proc.wait() |
| 93 | except OSError as e: |
| 94 | result = e.errno |
| 95 | if result == errno.ENOENT: |
| 96 | print args[0] + ':',e.strerror |
| 97 | print 'Is your PATH set correctly?' |
| 98 | else: |
| 99 | print ' '.join(args), str(e) |
| 100 | |
| 101 | return result |
| 102 | |
| 103 | if __name__ == '__main__': |
| 104 | status = run_gcc() |
| 105 | sys.exit(status) |