| #!/usr/bin/env python3 |
| # |
| # Script to analyze warnings produced by clang. |
| # |
| # This file is part of GCC. |
| # |
| # GCC is free software; you can redistribute it and/or modify it under |
| # the terms of the GNU General Public License as published by the Free |
| # Software Foundation; either version 3, or (at your option) any later |
| # version. |
| # |
| # GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| # WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| # for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with GCC; see the file COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. */ |
| # |
| # |
| # |
| |
| import argparse |
| |
| |
| def skip_warning(filename, message): |
| ignores = { |
| '': ['-Warray-bounds', '-Wmismatched-tags', |
| 'gcc_gfc: -Wignored-attributes', '-Wchar-subscripts', |
| 'string literal (potentially insecure): -Wformat-security', |
| '-Wdeprecated-register', |
| '-Wvarargs', 'keyword is hidden by macro definition', |
| "but the argument has type 'char *': -Wformat-pedantic", |
| '-Wnested-anon-types', |
| 'qualifier in explicit instantiation of', |
| 'attribute argument not supported: asm_fprintf', |
| 'when in C++ mode, this behavior is deprecated', |
| '-Wignored-attributes', '-Wgnu-zero-variadic-macro-arguments', |
| '-Wformat-security', '-Wundefined-internal', |
| '-Wunknown-warning-option', '-Wc++20-extensions', |
| '-Wbitwise-instead-of-logical', 'egrep is obsolescent'], |
| 'insn-modes.cc': ['-Wshift-count-overflow'], |
| 'insn-emit.cc': ['-Wtautological-compare'], |
| 'insn-attrtab.cc': ['-Wparentheses-equality'], |
| 'gimple-match.cc': ['-Wunused-', '-Wtautological-compare'], |
| 'generic-match.cc': ['-Wunused-', '-Wtautological-compare'], |
| 'i386.md': ['-Wparentheses-equality', '-Wtautological-compare', |
| '-Wtautological-overlap-compare'], |
| 'sse.md': ['-Wparentheses-equality', '-Wtautological-compare', |
| '-Wconstant-logical-operand'], |
| 'mmx.md': ['-Wtautological-compare'], |
| 'genautomata.cc': ['-Wstring-plus-int'], |
| 'fold-const-call.cc': ['-Wreturn-type'], |
| 'gfortran.texi': [''], |
| 'libtool': [''], |
| 'lex.cc': ['-Wc++20-attribute-extensions'], |
| } |
| |
| for name, ignore in ignores.items(): |
| for i in ignore: |
| if name in filename and i in message: |
| return True |
| return False |
| |
| |
| parser = argparse.ArgumentParser() |
| parser.add_argument('log', help='Log file with clang warnings') |
| args = parser.parse_args() |
| |
| lines = [line.strip() for line in open(args.log)] |
| total = 0 |
| messages = [] |
| for line in lines: |
| token = ': warning: ' |
| i = line.find(token) |
| if i != -1: |
| location = line[:i] |
| message = line[i + len(token):] |
| if not skip_warning(location, message): |
| total += 1 |
| messages.append(line) |
| |
| for line in sorted(messages): |
| print(line) |
| print('\nTotal warnings: %d' % total) |