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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of The Linux Foundation nor
# the names of its contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Invoke gcc, looking for warnings, and causing a failure if there are
# non-whitelisted warnings.
from __future__ import print_function
import errno
import re
import os
import sys
import subprocess
allowed_warnings = set([
"posix-cpu-timers.c:1268", # kernel/time/posix-cpu-timers.c:1268:13: warning: 'now' may be used uninitialized in this function
"af_unix.c:1036", # net/unix/af_unix.c:1036:20: warning: 'hash' may be used uninitialized in this function
"sunxi_sram.c:214", # drivers/soc/sunxi/sunxi_sram.c:214:24: warning: 'device' may be used uninitialized in this function
"ks8851.c:298", # drivers/net/ethernet/micrel/ks8851.c:298:2: warning: 'rxb[0]' may be used uninitialized in this function
"ks8851.c:421", # drivers/net/ethernet/micrel/ks8851.c:421:20: warning: 'rxb[0]' may be used uninitialized in this function
"compat_binfmt_elf.c:58", # fs/compat_binfmt_elf.c:58:13: warning: 'cputime_to_compat_timeval' defined but not used
"memcontrol.c:5337", # mm/memcontrol.c:5337:12: warning: initialization from incompatible pointer type
"atags_to_fdt.c:98", # arch/arm/boot/compressed/atags_to_fdt.c:98:1: warning: the frame size of 1032 bytes is larger than 1024 bytes
"drm_edid.c:3506", # drivers/gpu/drm/drm_edid.c:3506:13: warning: 'cea_db_is_hdmi_forum_vsdb' defined but not used
# W=1
"bounds.c:15", # kernel/bounds.c:15:6: warning: no previous prototype for ‘foo’
"cpufeature.h:157", # arch/arm64/include/asm/cpufeature.h:157:68: warning: signed and unsigned type in conditional expression
"sched.h:1211", # include/linux/sched.h:1211:1: warning: type qualifiers ignored on function return type
"halphyrf_8188e_ce.c:2208", # drivers/net/wireless/rockchip_wlan/rtl8189es/hal/phydm/rtl8188e/halphyrf_8188e_ce.c:2208:1: warning: the frame size of 1056 bytes is larger than 1024 bytes
"halphyrf_8723b_ce.c:2879", # drivers/net/wireless/rockchip_wlan/rtl8723bu/hal/phydm/rtl8723b/halphyrf_8723b_ce.c:2879:1: warning: the frame size of 1056 bytes is larger than 1024 bytes
])
# Capture the name of the object file, can find it.
ofile = None
do_exit = False;
warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''')
def interpret_warning(line):
"""Decode the message from gcc. The messages we care about have a filename, and a warning"""
line = line.rstrip('\n')
m = warning_re.match(line)
if m and m.group(2) not in allowed_warnings:
print ("error, forbidden warning:" + m.group(2))
# If there is a warning, remove any object if it exists.
if ofile:
try:
os.remove(ofile)
except OSError:
pass
global do_exit
do_exit = True;
def run_gcc():
args = sys.argv[1:]
# Look for -o
try:
i = args.index('-o')
global ofile
ofile = args[i+1]
except (ValueError, IndexError):
pass
compiler = sys.argv[0]
try:
env = os.environ.copy()
env['LC_ALL'] = 'C'
proc = subprocess.Popen(args, stderr=subprocess.PIPE, env=env)
for line in proc.stderr:
print (line.decode("utf-8"), end="")
interpret_warning(line.decode("utf-8"))
if do_exit:
sys.exit(1)
result = proc.wait()
except OSError as e:
result = e.errno
if result == errno.ENOENT:
print (args[0] + ':' + e.strerror)
print ('Is your PATH set correctly?')
else:
print (' '.join(args) + str(e))
return result
if __name__ == '__main__':
status = run_gcc()
sys.exit(status)
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