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a0464aa0 | 1 | #!/usr/bin/env python3 |
81f86cb9 | 2 | |
83ffe9cd | 3 | # Copyright (C) 2018-2023 Free Software Foundation, Inc. |
a0464aa0 | 4 | # |
247b63e3 | 5 | # Script to analyze warnings produced by clang. |
a0464aa0 ML |
6 | # |
7 | # This file is part of GCC. | |
8 | # | |
9 | # GCC is free software; you can redistribute it and/or modify it under | |
10 | # the terms of the GNU General Public License as published by the Free | |
11 | # Software Foundation; either version 3, or (at your option) any later | |
12 | # version. | |
13 | # | |
14 | # GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | # WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | # for more details. | |
18 | # | |
19 | # You should have received a copy of the GNU General Public License | |
20 | # along with GCC; see the file COPYING3. If not see | |
21 | # <http://www.gnu.org/licenses/>. */ | |
22 | # | |
23 | # | |
24 | # | |
25 | ||
a0464aa0 ML |
26 | import argparse |
27 | ||
19c1ef85 | 28 | |
247b63e3 | 29 | def skip_warning(filename, message): |
a0464aa0 | 30 | ignores = { |
19c1ef85 ML |
31 | '': ['-Warray-bounds', '-Wmismatched-tags', |
32 | 'gcc_gfc: -Wignored-attributes', '-Wchar-subscripts', | |
33 | 'string literal (potentially insecure): -Wformat-security', | |
34 | '-Wdeprecated-register', | |
35 | '-Wvarargs', 'keyword is hidden by macro definition', | |
36 | "but the argument has type 'char *': -Wformat-pedantic", | |
37 | '-Wnested-anon-types', | |
38 | 'qualifier in explicit instantiation of', | |
39 | 'attribute argument not supported: asm_fprintf', | |
40 | 'when in C++ mode, this behavior is deprecated', | |
41 | '-Wignored-attributes', '-Wgnu-zero-variadic-macro-arguments', | |
42 | '-Wformat-security', '-Wundefined-internal', | |
46cd445f | 43 | '-Wunknown-warning-option', '-Wc++20-extensions', |
63e3cc29 | 44 | '-Wbitwise-instead-of-logical', 'egrep is obsolescent'], |
e53b6e56 ML |
45 | 'insn-modes.cc': ['-Wshift-count-overflow'], |
46 | 'insn-emit.cc': ['-Wtautological-compare'], | |
47 | 'insn-attrtab.cc': ['-Wparentheses-equality'], | |
48 | 'gimple-match.cc': ['-Wunused-', '-Wtautological-compare'], | |
49 | 'generic-match.cc': ['-Wunused-', '-Wtautological-compare'], | |
5b17c3c6 ML |
50 | 'i386.md': ['-Wparentheses-equality', '-Wtautological-compare', |
51 | '-Wtautological-overlap-compare'], | |
603a9ab4 ML |
52 | 'sse.md': ['-Wparentheses-equality', '-Wtautological-compare', |
53 | '-Wconstant-logical-operand'], | |
d7705b0a | 54 | 'mmx.md': ['-Wtautological-compare'], |
e53b6e56 ML |
55 | 'genautomata.cc': ['-Wstring-plus-int'], |
56 | 'fold-const-call.cc': ['-Wreturn-type'], | |
5b17c3c6 | 57 | 'gfortran.texi': [''], |
68fd1c9f ML |
58 | 'libtool': [''], |
59 | 'lex.cc': ['-Wc++20-attribute-extensions'], | |
247b63e3 | 60 | } |
a0464aa0 | 61 | |
63e3cc29 ML |
62 | for name, ignore in ignores.items(): |
63 | for i in ignore: | |
a0464aa0 ML |
64 | if name in filename and i in message: |
65 | return True | |
a0464aa0 ML |
66 | return False |
67 | ||
19c1ef85 | 68 | |
a0464aa0 | 69 | parser = argparse.ArgumentParser() |
19c1ef85 | 70 | parser.add_argument('log', help='Log file with clang warnings') |
a0464aa0 ML |
71 | args = parser.parse_args() |
72 | ||
19c1ef85 | 73 | lines = [line.strip() for line in open(args.log)] |
d386d399 | 74 | messages = set() |
19c1ef85 | 75 | for line in lines: |
247b63e3 | 76 | token = ': warning: ' |
19c1ef85 | 77 | i = line.find(token) |
247b63e3 | 78 | if i != -1: |
19c1ef85 ML |
79 | location = line[:i] |
80 | message = line[i + len(token):] | |
0d1b5446 ML |
81 | if '/libffi/' in location or location.startswith('Makefile'): |
82 | continue | |
247b63e3 | 83 | if not skip_warning(location, message): |
d386d399 | 84 | messages.add(line) |
a0464aa0 | 85 | |
19c1ef85 ML |
86 | for line in sorted(messages): |
87 | print(line) | |
af49fd41 ML |
88 | |
89 | print('\nTotal warnings: %d' % len(messages)) |