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Replace conform/list-header-symbols.pl with a Python script.
Continuing the move of test code from Perl to Python (which seems uncontroversial, unlike dependencies on Python in the actual build of glibc), this patch replaces conform/list-header-symbols.pl with a Python script, as a first step in converting the conform/ tests. (conform/glibcconform.py is an equivalent to GlibcConform.pm, containing code that will be relevant to move than one of the conform/ scripts.) Tested for x86_64, including verifying that the symbol lists generated are identical to those generated by the Perl version. * conform/glibcconform.py: New file. * conform/list-header-symbols.py: Likewise. * conform/list-header-symbols.pl: Remove. * conform/Makefile (tests-special): Only add linknamespace tests if [PYTHON]. ($(linknamespace-symlists-tests)): Use list-header-symbols.py.
This commit is contained in:
Joseph Myers
parent
81b9d87bae
commit
2bbd06bcee
@ -1,3 +1,12 @@
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2018-08-31 Joseph Myers <joseph@codesourcery.com>
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* conform/glibcconform.py: New file.
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* conform/list-header-symbols.py: Likewise.
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* conform/list-header-symbols.pl: Remove.
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* conform/Makefile (tests-special): Only add linknamespace tests
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if [PYTHON].
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($(linknamespace-symlists-tests)): Use list-header-symbols.py.
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2018-08-31 H.J. Lu <hongjiu.lu@intel.com>
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[BZ #23597]
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@ -120,7 +120,9 @@ linknamespace-symlists-base := $(foreach std,$(conformtest-standards),\
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symlist-$(std))
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linknamespace-symlists-tests := $(addprefix $(objpfx),\
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$(linknamespace-symlists-base))
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ifdef PYTHON
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tests-special += $(linknamespace-symlists-tests)
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endif
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linknamespace-symlist-stdlibs-base := $(foreach std,$(conformtest-standards),\
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symlist-stdlibs-$(std))
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@ -128,7 +130,9 @@ linknamespace-symlist-stdlibs-tests := \
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$(addprefix $(objpfx),\
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$(linknamespace-symlist-stdlibs-base))
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ifdef PYTHON
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tests-special += $(linknamespace-symlist-stdlibs-tests)
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endif
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linknamespace-header-base := $(foreach std,\
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$(conformtest-standards),\
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@ -137,7 +141,9 @@ linknamespace-header-base := $(foreach std,\
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$(std)/$(h)/linknamespace.out))
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linknamespace-header-tests := $(addprefix $(objpfx),\
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$(linknamespace-header-base))
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ifdef PYTHON
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tests-special += $(linknamespace-header-tests)
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endif
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include ../Rules
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@ -181,11 +187,10 @@ $(conformtest-header-tests): $(objpfx)%/conform.out: \
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> $@); \
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$(evaluate-test)
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$(linknamespace-symlists-tests): $(objpfx)symlist-%: list-header-symbols.pl
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$(PERL) -I. -w $< --tmpdir=$(objpfx) --cc='$(CC)' \
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--flags='$(conformtest-cc-flags)' --standard=$* \
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--headers="$(strip $(conformtest-headers-$*))" \
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> $@ 2> $@.err; \
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$(linknamespace-symlists-tests): $(objpfx)symlist-%: list-header-symbols.py
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$(PYTHON) $< --cc='$(CC)' --flags='$(conformtest-cc-flags)' \
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--standard=$* --headers="$(strip $(conformtest-headers-$*))" \
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> $@ 2> $@.err; \
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$(evaluate-test)
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linknamespace-libs-isoc = $(common-objpfx)libc.a $(common-objpfx)math/libm.a
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77
conform/glibcconform.py
Normal file
77
conform/glibcconform.py
Normal file
@ -0,0 +1,77 @@
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#!/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 shutil
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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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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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# tempfile.TemporaryDirectory requires Python 3.2, so use mkdtemp.
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temp_dir = tempfile.mkdtemp()
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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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try:
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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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finally:
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shutil.rmtree(temp_dir)
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return fns
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@ -1,83 +0,0 @@
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#!/usr/bin/perl
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# Print a list of symbols exported by some headers that would
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# otherwise be in the user's namespace.
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# Copyright (C) 2014-2018 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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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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# 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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# 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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use GlibcConform;
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use Getopt::Long;
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GetOptions ('headers=s' => \$headers, 'standard=s' => \$standard,
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'flags=s' => \$flags, 'cc=s' => \$CC, 'tmpdir=s' => \$tmpdir);
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@headers = split (/\s+/, $headers);
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# Extra symbols possibly not found through -aux-info but still
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# reserved by the standard: either data symbols, or symbols where the
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# standard leaves unspecified whether the identifier is a macro or
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# defined with external linkage.
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$extra_syms{"ISO"} = ["errno", "setjmp", "va_end"];
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$extra_syms{"ISO99"} = ["errno", "math_errhandling", "setjmp", "va_end"];
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# stdatomic.h not yet covered by conformance tests; as per DR#419, all
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# the generic functions there or may not be defined with external
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# linkage (but are reserved in any case).
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$extra_syms{"ISO11"} = ["errno", "math_errhandling", "setjmp", "va_end"];
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# The following lists may not be exhaustive.
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$extra_syms{"POSIX"} = ["errno", "setjmp", "va_end", "environ", "sigsetjmp",
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"optarg", "optind", "opterr", "optopt", "tzname"];
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$extra_syms{"XPG4"} = ["errno", "setjmp", "va_end", "environ", "signgam",
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"loc1", "loc2", "locs", "sigsetjmp", "optarg",
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"optind", "opterr", "optopt", "daylight", "timezone",
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"tzname"];
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$extra_syms{"XPG42"} = ["errno", "setjmp", "va_end", "environ", "signgam",
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"loc1", "loc2", "locs", "sigsetjmp", "optarg",
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"optind", "opterr", "optopt", "daylight", "timezone",
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"tzname", "getdate_err", "h_errno"];
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$extra_syms{"UNIX98"} = ["errno", "setjmp", "va_end", "environ", "signgam",
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"loc1", "loc2", "locs", "sigsetjmp", "optarg",
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"optind", "opterr", "optopt", "daylight", "timezone",
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"tzname", "getdate_err", "h_errno"];
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$extra_syms{"XOPEN2K"} = ["errno", "setjmp", "va_end", "environ", "signgam",
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"sigsetjmp", "optarg", "optind", "opterr", "optopt",
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"daylight", "timezone", "tzname", "getdate_err",
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"h_errno", "in6addr_any", "in6addr_loopback"];
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$extra_syms{"XOPEN2K8"} = ["errno", "setjmp", "va_end", "environ", "signgam",
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"sigsetjmp", "optarg", "optind", "opterr", "optopt",
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"daylight", "timezone", "tzname", "getdate_err",
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"in6addr_any", "in6addr_loopback"];
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$extra_syms{"POSIX2008"} = ["errno", "setjmp", "va_end", "environ",
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"sigsetjmp", "optarg", "optind", "opterr", "optopt",
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"tzname", "in6addr_any", "in6addr_loopback"];
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%user_syms = ();
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foreach my $header (@headers) {
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@syms = list_exported_functions ("$CC $flags", $standard, $header, $tmpdir);
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foreach my $sym (@syms) {
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if ($sym !~ /^_/) {
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$user_syms{$sym} = 1;
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}
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}
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}
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foreach my $sym (@{$extra_syms{$standard}}) {
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$user_syms{$sym} = 1;
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}
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foreach my $sym (sort keys %user_syms) {
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print "$sym\n";
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}
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76
conform/list-header-symbols.py
Normal file
76
conform/list-header-symbols.py
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@ -0,0 +1,76 @@
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#!/usr/bin/python
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# Print a list of symbols exported by some headers that would
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# otherwise be in the user's namespace.
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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 argparse
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import glibcconform
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# Extra symbols possibly not found through -aux-info but still
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# reserved by the standard: either data symbols, or symbols where the
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# standard leaves unspecified whether the identifier is a macro or
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# defined with external linkage.
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EXTRA_SYMS = {}
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EXTRA_SYMS['ISO'] = {'errno', 'setjmp', 'va_end'}
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EXTRA_SYMS['ISO99'] = EXTRA_SYMS['ISO'] | {'math_errhandling'}
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# stdatomic.h not yet covered by conformance tests; as per DR#419, all
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# the generic functions there or may not be defined with external
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# linkage (but are reserved in any case).
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EXTRA_SYMS['ISO11'] = EXTRA_SYMS['ISO99']
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# The following lists may not be exhaustive.
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EXTRA_SYMS['POSIX'] = (EXTRA_SYMS['ISO']
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| {'environ', 'sigsetjmp', 'optarg', 'optind', 'opterr',
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'optopt', 'tzname'})
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EXTRA_SYMS['XPG4'] = (EXTRA_SYMS['POSIX']
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| {'signgam', 'loc1', 'loc2', 'locs', 'daylight',
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'timezone'})
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EXTRA_SYMS['XPG42'] = EXTRA_SYMS['XPG4'] | {'getdate_err', 'h_errno'}
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EXTRA_SYMS['UNIX98'] = EXTRA_SYMS['XPG42']
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EXTRA_SYMS['XOPEN2K'] = (EXTRA_SYMS['POSIX']
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| {'signgam', 'daylight', 'timezone', 'getdate_err',
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'h_errno', 'in6addr_any', 'in6addr_loopback'})
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EXTRA_SYMS['POSIX2008'] = (EXTRA_SYMS['POSIX']
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| {'in6addr_any', 'in6addr_loopback'})
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EXTRA_SYMS['XOPEN2K8'] = (EXTRA_SYMS['POSIX2008']
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| {'signgam', 'daylight', 'timezone', 'getdate_err'})
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def main():
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"""The main entry point."""
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parser = argparse.ArgumentParser(description='List exported symbols.')
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parser.add_argument('--headers', metavar='HEADERS',
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help='list of headers')
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parser.add_argument('--standard', metavar='STD',
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help='standard to use when processing headers')
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parser.add_argument('--cc', metavar='CC',
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help='C compiler to use')
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parser.add_argument('--flags', metavar='CFLAGS',
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help='Compiler flags to use with CC')
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args = parser.parse_args()
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fns = set()
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compiler = '%s %s' % (args.cc, args.flags)
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for header in args.headers.split():
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fns |= glibcconform.list_exported_functions(compiler, args.standard,
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header)
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fns |= EXTRA_SYMS[args.standard]
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print('\n'.join(sorted(fn for fn in fns if not fn.startswith('_'))))
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if __name__ == '__main__':
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main()
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