1#!/usr/bin/env python3 2# 3# Script to analyze warnings produced by clang. 4# 5# This file is part of GCC. 6# 7# GCC is free software; you can redistribute it and/or modify it under 8# the terms of the GNU General Public License as published by the Free 9# Software Foundation; either version 3, or (at your option) any later 10# version. 11# 12# GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13# WARRANTY; without even the implied warranty of MERCHANTABILITY or 14# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15# for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with GCC; see the file COPYING3. If not see 19# <http://www.gnu.org/licenses/>. */ 20# 21# 22# 23 24import sys 25import argparse 26 27def skip_warning(filename, message): 28 ignores = { 29 '': ['-Warray-bounds', '-Wmismatched-tags', 'gcc_gfc: -Wignored-attributes', '-Wchar-subscripts', 30 'string literal (potentially insecure): -Wformat-security', '-Wdeprecated-register', 31 '-Wvarargs', 'keyword is hidden by macro definition', "but the argument has type 'char *': -Wformat-pedantic", 32 '-Wnested-anon-types', 'qualifier in explicit instantiation of', 'attribute argument not supported: asm_fprintf', 33 'when in C++ mode, this behavior is deprecated', '-Wignored-attributes', '-Wgnu-zero-variadic-macro-arguments', 34 '-Wformat-security'], 35 'insn-modes.c': ['-Wshift-count-overflow'], 36 'insn-emit.c': ['-Wtautological-compare'], 37 'insn-attrtab.c': ['-Wparentheses-equality'], 38 'gimple-match.c': ['-Wunused-', '-Wtautological-compare'], 39 'generic-match.c': ['-Wunused-', '-Wtautological-compare'], 40 'i386.md': ['-Wparentheses-equality', '-Wtautological-compare'], 41 'sse.md': ['-Wparentheses-equality', '-Wtautological-compare'], 42 'genautomata.c': ['-Wstring-plus-int'] 43 44 } 45 46 for name, ignores in ignores.items(): 47 for i in ignores: 48 if name in filename and i in message: 49 return True 50 51 return False 52 53parser = argparse.ArgumentParser() 54parser.add_argument('log', help = 'Log file with clang warnings') 55args = parser.parse_args() 56 57lines = [l.strip() for l in open(args.log)] 58total = 0 59messages = [] 60for l in lines: 61 token = ': warning: ' 62 i = l.find(token) 63 if i != -1: 64 location = l[:i] 65 message = l[i + len(token):] 66 if not skip_warning(location, message): 67 total += 1 68 messages.append(l) 69 70for l in sorted(messages): 71 print(l) 72print('\nTotal warnings: %d' % total) 73