mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
467 lines
16 KiB
Python
Executable File
467 lines
16 KiB
Python
Executable File
#! /usr/bin/python3
|
|
# Copyright (C) 2019-2021 Free Software Foundation, Inc.
|
|
# This file is part of the GNU C Library.
|
|
#
|
|
# The GNU C Library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# The GNU C Library 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
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with the GNU C Library; if not, see
|
|
# <https://www.gnu.org/licenses/>.
|
|
|
|
"""Verifies that installed headers do not use any obsolete constructs:
|
|
* legacy BSD typedefs superseded by <stdint.h>:
|
|
ushort uint ulong u_char u_short u_int u_long u_intNN_t quad_t u_quad_t
|
|
(sys/types.h is allowed to _define_ these types, but not to use them
|
|
to define anything else).
|
|
"""
|
|
|
|
import argparse
|
|
import collections
|
|
import re
|
|
import sys
|
|
|
|
# Simplified lexical analyzer for C preprocessing tokens.
|
|
# Does not implement trigraphs.
|
|
# Does not implement backslash-newline in the middle of any lexical
|
|
# item other than a string literal.
|
|
# Does not implement universal-character-names in identifiers.
|
|
# Treats prefixed strings (e.g. L"...") as two tokens (L and "...")
|
|
# Accepts non-ASCII characters only within comments and strings.
|
|
|
|
# Caution: The order of the outermost alternation matters.
|
|
# STRING must be before BAD_STRING, CHARCONST before BAD_CHARCONST,
|
|
# BLOCK_COMMENT before BAD_BLOCK_COM before PUNCTUATOR, and OTHER must
|
|
# be last.
|
|
# Caution: There should be no capturing groups other than the named
|
|
# captures in the outermost alternation.
|
|
|
|
# For reference, these are all of the C punctuators as of C11:
|
|
# [ ] ( ) { } , ; ? ~
|
|
# ! != * *= / /= ^ ^= = ==
|
|
# # ##
|
|
# % %= %> %: %:%:
|
|
# & &= &&
|
|
# | |= ||
|
|
# + += ++
|
|
# - -= -- ->
|
|
# . ...
|
|
# : :>
|
|
# < <% <: << <<= <=
|
|
# > >= >> >>=
|
|
|
|
# The BAD_* tokens are not part of the official definition of pp-tokens;
|
|
# they match unclosed strings, character constants, and block comments,
|
|
# so that the regex engine doesn't have to backtrack all the way to the
|
|
# beginning of a broken construct and then emit dozens of junk tokens.
|
|
|
|
PP_TOKEN_RE_ = re.compile(r"""
|
|
(?P<STRING> \"(?:[^\"\\\r\n]|\\(?:[\r\n -~]|\r\n))*\")
|
|
|(?P<BAD_STRING> \"(?:[^\"\\\r\n]|\\[ -~])*)
|
|
|(?P<CHARCONST> \'(?:[^\'\\\r\n]|\\(?:[\r\n -~]|\r\n))*\')
|
|
|(?P<BAD_CHARCONST> \'(?:[^\'\\\r\n]|\\[ -~])*)
|
|
|(?P<BLOCK_COMMENT> /\*(?:\*(?!/)|[^*])*\*/)
|
|
|(?P<BAD_BLOCK_COM> /\*(?:\*(?!/)|[^*])*\*?)
|
|
|(?P<LINE_COMMENT> //[^\r\n]*)
|
|
|(?P<IDENT> [_a-zA-Z][_a-zA-Z0-9]*)
|
|
|(?P<PP_NUMBER> \.?[0-9](?:[0-9a-df-oq-zA-DF-OQ-Z_.]|[eEpP][+-]?)*)
|
|
|(?P<PUNCTUATOR>
|
|
[,;?~(){}\[\]]
|
|
| [!*/^=]=?
|
|
| \#\#?
|
|
| %(?:[=>]|:(?:%:)?)?
|
|
| &[=&]?
|
|
|\|[=|]?
|
|
|\+[=+]?
|
|
| -[=->]?
|
|
|\.(?:\.\.)?
|
|
| :>?
|
|
| <(?:[%:]|<(?:=|<=?)?)?
|
|
| >(?:=|>=?)?)
|
|
|(?P<ESCNL> \\(?:\r|\n|\r\n))
|
|
|(?P<WHITESPACE> [ \t\n\r\v\f]+)
|
|
|(?P<OTHER> .)
|
|
""", re.DOTALL | re.VERBOSE)
|
|
|
|
HEADER_NAME_RE_ = re.compile(r"""
|
|
< [^>\r\n]+ >
|
|
| " [^"\r\n]+ "
|
|
""", re.DOTALL | re.VERBOSE)
|
|
|
|
ENDLINE_RE_ = re.compile(r"""\r|\n|\r\n""")
|
|
|
|
# based on the sample code in the Python re documentation
|
|
Token_ = collections.namedtuple("Token", (
|
|
"kind", "text", "line", "column", "context"))
|
|
Token_.__doc__ = """
|
|
One C preprocessing token, comment, or chunk of whitespace.
|
|
'kind' identifies the token type, which will be one of:
|
|
STRING, CHARCONST, BLOCK_COMMENT, LINE_COMMENT, IDENT,
|
|
PP_NUMBER, PUNCTUATOR, ESCNL, WHITESPACE, HEADER_NAME,
|
|
or OTHER. The BAD_* alternatives in PP_TOKEN_RE_ are
|
|
handled within tokenize_c, below.
|
|
|
|
'text' is the sequence of source characters making up the token;
|
|
no decoding whatsoever is performed.
|
|
|
|
'line' and 'column' give the position of the first character of the
|
|
token within the source file. They are both 1-based.
|
|
|
|
'context' indicates whether or not this token occurred within a
|
|
preprocessing directive; it will be None for running text,
|
|
'<null>' for the leading '#' of a directive line (because '#'
|
|
all by itself on a line is a "null directive"), or the name of
|
|
the directive for tokens within a directive line, starting with
|
|
the IDENT for the name itself.
|
|
"""
|
|
|
|
def tokenize_c(file_contents, reporter):
|
|
"""Yield a series of Token objects, one for each preprocessing
|
|
token, comment, or chunk of whitespace within FILE_CONTENTS.
|
|
The REPORTER object is expected to have one method,
|
|
reporter.error(token, message), which will be called to
|
|
indicate a lexical error at the position of TOKEN.
|
|
If MESSAGE contains the four-character sequence '{!r}', that
|
|
is expected to be replaced by repr(token.text).
|
|
"""
|
|
|
|
Token = Token_
|
|
PP_TOKEN_RE = PP_TOKEN_RE_
|
|
ENDLINE_RE = ENDLINE_RE_
|
|
HEADER_NAME_RE = HEADER_NAME_RE_
|
|
|
|
line_num = 1
|
|
line_start = 0
|
|
pos = 0
|
|
limit = len(file_contents)
|
|
directive = None
|
|
at_bol = True
|
|
while pos < limit:
|
|
if directive == "include":
|
|
mo = HEADER_NAME_RE.match(file_contents, pos)
|
|
if mo:
|
|
kind = "HEADER_NAME"
|
|
directive = "after_include"
|
|
else:
|
|
mo = PP_TOKEN_RE.match(file_contents, pos)
|
|
kind = mo.lastgroup
|
|
if kind != "WHITESPACE":
|
|
directive = "after_include"
|
|
else:
|
|
mo = PP_TOKEN_RE.match(file_contents, pos)
|
|
kind = mo.lastgroup
|
|
|
|
text = mo.group()
|
|
line = line_num
|
|
column = mo.start() - line_start
|
|
adj_line_start = 0
|
|
# only these kinds can contain a newline
|
|
if kind in ("WHITESPACE", "BLOCK_COMMENT", "LINE_COMMENT",
|
|
"STRING", "CHARCONST", "BAD_BLOCK_COM", "ESCNL"):
|
|
for tmo in ENDLINE_RE.finditer(text):
|
|
line_num += 1
|
|
adj_line_start = tmo.end()
|
|
if adj_line_start:
|
|
line_start = mo.start() + adj_line_start
|
|
|
|
# Track whether or not we are scanning a preprocessing directive.
|
|
if kind == "LINE_COMMENT" or (kind == "WHITESPACE" and adj_line_start):
|
|
at_bol = True
|
|
directive = None
|
|
else:
|
|
if kind == "PUNCTUATOR" and text == "#" and at_bol:
|
|
directive = "<null>"
|
|
elif kind == "IDENT" and directive == "<null>":
|
|
directive = text
|
|
at_bol = False
|
|
|
|
# Report ill-formed tokens and rewrite them as their well-formed
|
|
# equivalents, so downstream processing doesn't have to know about them.
|
|
# (Rewriting instead of discarding provides better error recovery.)
|
|
if kind == "BAD_BLOCK_COM":
|
|
reporter.error(Token("BAD_BLOCK_COM", "", line, column+1, ""),
|
|
"unclosed block comment")
|
|
text += "*/"
|
|
kind = "BLOCK_COMMENT"
|
|
elif kind == "BAD_STRING":
|
|
reporter.error(Token("BAD_STRING", "", line, column+1, ""),
|
|
"unclosed string")
|
|
text += "\""
|
|
kind = "STRING"
|
|
elif kind == "BAD_CHARCONST":
|
|
reporter.error(Token("BAD_CHARCONST", "", line, column+1, ""),
|
|
"unclosed char constant")
|
|
text += "'"
|
|
kind = "CHARCONST"
|
|
|
|
tok = Token(kind, text, line, column+1,
|
|
"include" if directive == "after_include" else directive)
|
|
# Do not complain about OTHER tokens inside macro definitions.
|
|
# $ and @ appear in macros defined by headers intended to be
|
|
# included from assembly language, e.g. sysdeps/mips/sys/asm.h.
|
|
if kind == "OTHER" and directive != "define":
|
|
self.error(tok, "stray {!r} in program")
|
|
|
|
yield tok
|
|
pos = mo.end()
|
|
|
|
#
|
|
# Base and generic classes for individual checks.
|
|
#
|
|
|
|
class ConstructChecker:
|
|
"""Scan a stream of C preprocessing tokens and possibly report
|
|
problems with them. The REPORTER object passed to __init__ has
|
|
one method, reporter.error(token, message), which should be
|
|
called to indicate a problem detected at the position of TOKEN.
|
|
If MESSAGE contains the four-character sequence '{!r}' then that
|
|
will be replaced with a textual representation of TOKEN.
|
|
"""
|
|
def __init__(self, reporter):
|
|
self.reporter = reporter
|
|
|
|
def examine(self, tok):
|
|
"""Called once for each token in a header file.
|
|
Call self.reporter.error if a problem is detected.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def eof(self):
|
|
"""Called once at the end of the stream. Subclasses need only
|
|
override this if it might have something to do."""
|
|
pass
|
|
|
|
class NoCheck(ConstructChecker):
|
|
"""Generic checker class which doesn't do anything. Substitute this
|
|
class for a real checker when a particular check should be skipped
|
|
for some file."""
|
|
|
|
def examine(self, tok):
|
|
pass
|
|
|
|
#
|
|
# Check for obsolete type names.
|
|
#
|
|
|
|
# The obsolete type names we're looking for:
|
|
OBSOLETE_TYPE_RE_ = re.compile(r"""\A
|
|
(__)?
|
|
( quad_t
|
|
| u(?: short | int | long
|
|
| _(?: char | short | int(?:[0-9]+_t)? | long | quad_t )))
|
|
\Z""", re.VERBOSE)
|
|
|
|
class ObsoleteNotAllowed(ConstructChecker):
|
|
"""Don't allow any use of the obsolete typedefs."""
|
|
def examine(self, tok):
|
|
if OBSOLETE_TYPE_RE_.match(tok.text):
|
|
self.reporter.error(tok, "use of {!r}")
|
|
|
|
class ObsoletePrivateDefinitionsAllowed(ConstructChecker):
|
|
"""Allow definitions of the private versions of the
|
|
obsolete typedefs; that is, 'typedef [anything] __obsolete;'
|
|
"""
|
|
def __init__(self, reporter):
|
|
super().__init__(reporter)
|
|
self.in_typedef = False
|
|
self.prev_token = None
|
|
|
|
def examine(self, tok):
|
|
# bits/types.h hides 'typedef' in a macro sometimes.
|
|
if (tok.kind == "IDENT"
|
|
and tok.text in ("typedef", "__STD_TYPE")
|
|
and tok.context is None):
|
|
self.in_typedef = True
|
|
elif tok.kind == "PUNCTUATOR" and tok.text == ";" and self.in_typedef:
|
|
self.in_typedef = False
|
|
if self.prev_token.kind == "IDENT":
|
|
m = OBSOLETE_TYPE_RE_.match(self.prev_token.text)
|
|
if m and m.group(1) != "__":
|
|
self.reporter.error(self.prev_token, "use of {!r}")
|
|
self.prev_token = None
|
|
else:
|
|
self._check_prev()
|
|
|
|
self.prev_token = tok
|
|
|
|
def eof(self):
|
|
self._check_prev()
|
|
|
|
def _check_prev(self):
|
|
if (self.prev_token is not None
|
|
and self.prev_token.kind == "IDENT"
|
|
and OBSOLETE_TYPE_RE_.match(self.prev_token.text)):
|
|
self.reporter.error(self.prev_token, "use of {!r}")
|
|
|
|
class ObsoletePublicDefinitionsAllowed(ConstructChecker):
|
|
"""Allow definitions of the public versions of the obsolete
|
|
typedefs. Only specific forms of definition are allowed:
|
|
|
|
typedef __obsolete obsolete; // identifiers must agree
|
|
typedef __uintN_t u_intN_t; // N must agree
|
|
typedef unsigned long int ulong;
|
|
typedef unsigned short int ushort;
|
|
typedef unsigned int uint;
|
|
"""
|
|
def __init__(self, reporter):
|
|
super().__init__(reporter)
|
|
self.typedef_tokens = []
|
|
|
|
def examine(self, tok):
|
|
if tok.kind in ("WHITESPACE", "BLOCK_COMMENT",
|
|
"LINE_COMMENT", "NL", "ESCNL"):
|
|
pass
|
|
|
|
elif (tok.kind == "IDENT" and tok.text == "typedef"
|
|
and tok.context is None):
|
|
if self.typedef_tokens:
|
|
self.reporter.error(tok, "typedef inside typedef")
|
|
self._reset()
|
|
self.typedef_tokens.append(tok)
|
|
|
|
elif tok.kind == "PUNCTUATOR" and tok.text == ";":
|
|
self._finish()
|
|
|
|
elif self.typedef_tokens:
|
|
self.typedef_tokens.append(tok)
|
|
|
|
def eof(self):
|
|
self._reset()
|
|
|
|
def _reset(self):
|
|
while self.typedef_tokens:
|
|
tok = self.typedef_tokens.pop(0)
|
|
if tok.kind == "IDENT" and OBSOLETE_TYPE_RE_.match(tok.text):
|
|
self.reporter.error(tok, "use of {!r}")
|
|
|
|
def _finish(self):
|
|
if not self.typedef_tokens: return
|
|
if self.typedef_tokens[-1].kind == "IDENT":
|
|
m = OBSOLETE_TYPE_RE_.match(self.typedef_tokens[-1].text)
|
|
if m:
|
|
if self._permissible_public_definition(m):
|
|
self.typedef_tokens.clear()
|
|
self._reset()
|
|
|
|
def _permissible_public_definition(self, m):
|
|
if m.group(1) == "__": return False
|
|
name = m.group(2)
|
|
toks = self.typedef_tokens
|
|
ntok = len(toks)
|
|
if ntok == 3 and toks[1].kind == "IDENT":
|
|
defn = toks[1].text
|
|
n = OBSOLETE_TYPE_RE_.match(defn)
|
|
if n and n.group(1) == "__" and n.group(2) == name:
|
|
return True
|
|
|
|
if (name[:5] == "u_int" and name[-2:] == "_t"
|
|
and defn[:6] == "__uint" and defn[-2:] == "_t"
|
|
and name[5:-2] == defn[6:-2]):
|
|
return True
|
|
|
|
return False
|
|
|
|
if (name == "ulong" and ntok == 5
|
|
and toks[1].kind == "IDENT" and toks[1].text == "unsigned"
|
|
and toks[2].kind == "IDENT" and toks[2].text == "long"
|
|
and toks[3].kind == "IDENT" and toks[3].text == "int"):
|
|
return True
|
|
|
|
if (name == "ushort" and ntok == 5
|
|
and toks[1].kind == "IDENT" and toks[1].text == "unsigned"
|
|
and toks[2].kind == "IDENT" and toks[2].text == "short"
|
|
and toks[3].kind == "IDENT" and toks[3].text == "int"):
|
|
return True
|
|
|
|
if (name == "uint" and ntok == 4
|
|
and toks[1].kind == "IDENT" and toks[1].text == "unsigned"
|
|
and toks[2].kind == "IDENT" and toks[2].text == "int"):
|
|
return True
|
|
|
|
return False
|
|
|
|
def ObsoleteTypedefChecker(reporter, fname):
|
|
"""Factory: produce an instance of the appropriate
|
|
obsolete-typedef checker for FNAME."""
|
|
|
|
# The obsolete rpc/ and rpcsvc/ headers are allowed to use the
|
|
# obsolete types, because it would be more trouble than it's
|
|
# worth to remove them from headers that we intend to stop
|
|
# installing eventually anyway.
|
|
if (fname.startswith("rpc/")
|
|
or fname.startswith("rpcsvc/")
|
|
or "/rpc/" in fname
|
|
or "/rpcsvc/" in fname):
|
|
return NoCheck(reporter)
|
|
|
|
# bits/types.h is allowed to define the __-versions of the
|
|
# obsolete types.
|
|
if (fname == "bits/types.h"
|
|
or fname.endswith("/bits/types.h")):
|
|
return ObsoletePrivateDefinitionsAllowed(reporter)
|
|
|
|
# sys/types.h is allowed to use the __-versions of the
|
|
# obsolete types, but only to define the unprefixed versions.
|
|
if (fname == "sys/types.h"
|
|
or fname.endswith("/sys/types.h")):
|
|
return ObsoletePublicDefinitionsAllowed(reporter)
|
|
|
|
return ObsoleteNotAllowed(reporter)
|
|
|
|
#
|
|
# Master control
|
|
#
|
|
|
|
class HeaderChecker:
|
|
"""Perform all of the checks on each header. This is also the
|
|
"reporter" object expected by tokenize_c and ConstructChecker.
|
|
"""
|
|
def __init__(self):
|
|
self.fname = None
|
|
self.status = 0
|
|
|
|
def error(self, tok, message):
|
|
self.status = 1
|
|
if '{!r}' in message:
|
|
message = message.format(tok.text)
|
|
sys.stderr.write("{}:{}:{}: error: {}\n".format(
|
|
self.fname, tok.line, tok.column, message))
|
|
|
|
def check(self, fname):
|
|
self.fname = fname
|
|
try:
|
|
with open(fname, "rt", encoding="utf-8") as fp:
|
|
contents = fp.read()
|
|
except OSError as e:
|
|
sys.stderr.write("{}: {}\n".format(fname, e.strerror))
|
|
self.status = 1
|
|
return
|
|
|
|
typedef_checker = ObsoleteTypedefChecker(self, self.fname)
|
|
|
|
for tok in tokenize_c(contents, self):
|
|
typedef_checker.examine(tok)
|
|
|
|
def main():
|
|
ap = argparse.ArgumentParser(description=__doc__)
|
|
ap.add_argument("headers", metavar="header", nargs="+",
|
|
help="one or more headers to scan for obsolete constructs")
|
|
args = ap.parse_args()
|
|
|
|
checker = HeaderChecker()
|
|
for fname in args.headers:
|
|
# Headers whose installed name begins with "finclude/" contain
|
|
# Fortran, not C, and this program should completely ignore them.
|
|
if not (fname.startswith("finclude/") or "/finclude/" in fname):
|
|
checker.check(fname)
|
|
sys.exit(checker.status)
|
|
|
|
main()
|