2 # -*- coding: utf-8 -*-
4 # Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
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
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.
30 # Invoke gcc, looking for warnings, and causing a failure if there are
31 # non-whitelisted warnings.
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.
42 allowed_warnings = set([
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
45 "af_unix.c:1026", # net/unix/af_unix.c:1026:20: warning: 'hash' may be used uninitialized in this function
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
50 "compat_binfmt_elf.c:58", # fs/compat_binfmt_elf.c:58:13: warning: 'cputime_to_compat_timeval' defined but not used
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
55 # Capture the name of the object file, can find it.
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)
66 # If there is a warning, remove any object if it exists.
81 except (ValueError, IndexError):
84 compiler = sys.argv[0]
87 proc = subprocess.Popen(args, stderr=subprocess.PIPE)
88 for line in proc.stderr:
90 interpret_warning(line)
95 if result == errno.ENOENT:
96 print args[0] + ':',e.strerror
97 print 'Is your PATH set correctly?'
99 print ' '.join(args), str(e)
103 if __name__ == '__main__':