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c3ec097256
Continuing the consolidation on Python for various miscellaneous build
and test scripts, this patch moves conformtest from Perl to Python.
The substance of the tests run is intended to be the same as before,
except that the previous test for tags did not actually achieve the
intended purpose of verifying whether a tag was already declared, so
is changed to one that would actually fail for a tag that wasn't
declared, and a typo in the old test for variables being available
($xyzzy instead of xyzzy) would have made that test not use the
correct type (but it would have passed anyway with warnings). No
attempt is made to keep the details of what the test output looks
like; instead, tests are given names which are made to follow PASS: /
FAIL: / XFAIL: / SKIP: / MISSING: as appropriate.
In the new version, there is more consistent parsing of test lines
(into a series of words, either surrounded by {} or separated by
spaces) that applies for all kinds of test lines, rather than the old
approach of different regular expressions for every kind of test. A
few of the conform/data/ files are adjusted so their syntax works with
the new script (which now requires spaces in certain cases where the
old script tolerated them being missing, and does not allow stray
semicolons at the end of "function" lines). Similarly, common logic
is used around what happens with a second subtest if a first one fails
(e.g., a test for a symbol's type if the test for availability fails),
rather than such logic being replicated separately for each kind of
test. Common parsing also applies for test lines both when they are
lines for the header under test and when they are lines for another
header specified with allow-header, again unlike the old script.
Tested for x86_64, and with build-many-glibcs.py.
* conform/conformtest.py: New file.
* conform/conformtest.pl: Remove.
* conform/GlibcConform.pm: Likewise.
* conform/glibcconform.py (KEYWORDS_C90): New constant.
(KEYWORDS_C99): Likewise.
(KEYWORDS): Likewise.
* conform/Makefile ($(conformtest-header-tests)): Use
conformtest.py instead of conformtest.pl. Do not pass --tmpdir
option. Use --header instead of --headers.
* conform/data/arpa/inet.h-data: Remove trailing semicolons on
function entries.
* conform/data/spawn.h-data: Likewise.
* conform/data/fcntl.h-data (openat): Add space after function
name.
* conform/data/wchar.h-data (wcscasecmp): Likewise.
(wcscasecmp_l): Likewise.
* conform/data/termios.h-data (c_cc): Add space after element
name.
95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
#!/usr/bin/python
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# Shared code for glibc conformance tests.
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# Copyright (C) 2018 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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#
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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import os.path
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import re
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import subprocess
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import tempfile
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# Compiler options for each standard.
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CFLAGS = {'ISO': '-ansi',
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'ISO99': '-std=c99',
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'ISO11': '-std=c11',
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'POSIX': '-D_POSIX_C_SOURCE=199506L -ansi',
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'XPG4': '-ansi -D_XOPEN_SOURCE',
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'XPG42': '-ansi -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED',
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'UNIX98': '-ansi -D_XOPEN_SOURCE=500',
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'XOPEN2K': '-std=c99 -D_XOPEN_SOURCE=600',
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'XOPEN2K8': '-std=c99 -D_XOPEN_SOURCE=700',
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'POSIX2008': '-std=c99 -D_POSIX_C_SOURCE=200809L'}
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# ISO C90 keywords.
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KEYWORDS_C90 = {'auto', 'break', 'case', 'char', 'const', 'continue',
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'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
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'for', 'goto', 'if', 'int', 'long', 'register', 'return',
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'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
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'typedef', 'union', 'unsigned', 'void', 'volatile', 'while'}
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# ISO C99 keywords.
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KEYWORDS_C99 = KEYWORDS_C90 | {'inline', 'restrict'}
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# Keywords for each standard.
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KEYWORDS = {'ISO': KEYWORDS_C90,
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'ISO99': KEYWORDS_C99,
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'ISO11': KEYWORDS_C99,
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'POSIX': KEYWORDS_C90,
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'XPG4': KEYWORDS_C90,
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'XPG42': KEYWORDS_C90,
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'UNIX98': KEYWORDS_C90,
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'XOPEN2K': KEYWORDS_C99,
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'XOPEN2K8': KEYWORDS_C99,
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'POSIX2008': KEYWORDS_C99}
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def list_exported_functions(cc, standard, header):
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"""Return the set of functions exported by a header, empty if an
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include of the header does not compile.
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"""
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cc_all = '%s -D_ISOMAC %s' % (cc, CFLAGS[standard])
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with tempfile.TemporaryDirectory() as temp_dir:
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c_file_name = os.path.join(temp_dir, 'test.c')
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aux_file_name = os.path.join(temp_dir, 'test.c.aux')
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with open(c_file_name, 'w') as c_file:
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c_file.write('#include <%s>\n' % header)
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fns = set()
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cmd = ('%s -c %s -o /dev/null -aux-info %s'
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% (cc_all, c_file_name, aux_file_name))
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try:
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subprocess.check_call(cmd, shell=True)
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except subprocess.CalledProcessError:
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return fns
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with open(aux_file_name, 'r') as aux_file:
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for line in aux_file:
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line = re.sub(r'/\*.*?\*/', '', line)
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line = line.strip()
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if line:
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# The word before a '(' that isn't '(*' is the
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# function name before the argument list (not
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# fully general, but sufficient for -aux-info
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# output on standard headers).
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m = re.search(r'([A-Za-z0-9_]+) *\([^*]', line)
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if m:
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fns.add(m.group(1))
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else:
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raise ValueError("couldn't parse -aux-info output: %s"
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% line)
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return fns
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