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6 Commits

Author SHA1 Message Date
Mike Frysinger
3840aabcd5 conform/linknamespace: whitelist matherrf/matherrl 
glibc supports the deprecated matherr hook for math error reporting.  The
conform tests take this into consideration and whitelist this symbol when
running linknamespace tests.

The ia64 libm code has long provided two additional hooks in this space:
	matherrf (for floats)
	matherrl (for long doubles)

Which causes the conform tests to fail with chains that all look like:
	[initial] __atan2 ->
	[libm.a(e_atan2.o)] __libm_error_support ->
	[libm.a(libm_error.o)] matherrf

We can't (losslessly) redirect existing usage of these funcs to matherr
because the structure passed in is different -- matherr uses a struct with
doubles while matherrf/matherrl use floats and long doubles respectively.
Plus, this has been part of the exported ABI since glibc-2.2.3, so it
doesn't feel right to change it so late.

Until we get around to obsoleting matherr entirely, whitelist these two
additional ia64 symbols.
 2015-07-23 03:28:53 -04:00
Joseph Myers
9d12d7652b linknamespace: whitelist re_syntax_options. 
This patch adds re_syntax_options (bug 18442) to the set of symbols
that are whitelisted in the linknamespace tests because, while the
references to them are genuine bugs that should be fixed, the
involvement of data symbols makes them harder to fix than most such
bugs.

Tested for x86_64 and x86.

	* conform/linknamespace.pl (@whitelist): Add re_syntax_options.
	* conform/Makefile (test-xfail-UNIX98/regex.h/linknamespace):
	Remove variable.
	(test-xfail-XOPEN2K/regex.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/regex.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/regex.h/linknamespace): Likewise.
 2015-05-21 16:24:24 +00:00
Joseph Myers
8e65ea4dc0 Fix linknamespace test handling of architecture-specific st_other. 
For mips16, some of the linknamespace tests were failing because
[MIPS16] annotations in readelf output were wrongly interpreted as
falling in the symbol index field, meaning symbol index values were
wrongly interpreted as symbol names and such names as 1 and 2 then
resulted in namespace test failures.

This patch fixes this by removing the annotations for such
architecture-specific st_other bits before splitting the readelf
output into fields.  Tested for x86_64 and mips16.

	* conform/linknamespace.pl (list_syms): Remove \[.*?\] before
	splitting into fields.
 2015-05-12 17:09:49 +00:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Joseph Myers
0e7e69baa8 Make linknamespace tests check only relevant libraries. 
This patch addresses one known caveat in the linknamespace tests: with
this patch they will now only look for definitions of symbols in
relevant libraries, meaning that librt and libpthread are not checked
for ISO C standards, XPG3 and XPG4.

In particular, this means that if __pthread_initialize_minimal is
somehow brought in for one of those standards, the definition from
libc-tls.o will be considered instead of that from libpthread, so
avoiding bringing in lots of other libpthread symbols.  This should
address some of the failures reported by Carlos in
<https://sourceware.org/ml/libc-alpha/2014-11/msg00882.html>, where
__pointer_chk_guard_local brought in __pthread_initialize_minimal.

Tested for x86_64.  The removal of one XFAIL for XPG4 actually shows
up a header bug (shm_open should not be declared for XPG4 - the
namespace issue was for symbols brought in by shm_open, which is no
longer found at all now librt isn't searched; I've filed bug 17663 for
the header bug, though it would show up eventually anyway in the
course of review of conform/ data against XPG4).

Committed.

	* conform/Makefile (linknamespace-symlist-stdlibs-base): New
	variable.
	(linknamespace-symlist-stdlibs-tests): Likewise.
	(tests-special): Append $(linknamespace-symlist-stdlibs-tests)
	instead of $(objpfx)symlist-stdlibs.
	(linknamespace-libs-isoc): New variable.
	(linknamespace-libs): Use $(linknamespace-libs-isoc).
	(linknamespace-libs-ISO): New variable.
	(linknamespace-libs-ISO99): Likewise.
	(linknamespace-libs-ISO11): Likewise.
	(linknamespace-libs-XPG3): Likewise.
	(linknamespace-libs-XPG4): Likewise.
	(linknamespace-libs-POSIX): Likewise.
	(linknamespace-libs-UNIX98): Likewise.
	(linknamespace-libs-XOPEN2K): Likewise.
	(linknamespace-libs-POSIX2008): Likewise.
	(linknamespace-libs-XOPEN2K8): Likewise.
	($(objpfx)symlist-stdlibs): Replace by
	$(linknamespace-symlist-stdlibs-tests).  Use
	$(linknamespace-libs-$*) as set of libraries.
	($(linknamespace-header-tests)): Update dependencies.  Use
	$(objpfx)symlist-stdlibs-$$std for --libsyms argument.
	(test-xfail-XPG4/sys/mman.h/linknamespace): Remove.
	* conform/linknamespace.pl: Remove comment about considering
	definitions of symbols from irrelevant libraries.
 2014-11-29 01:46:56 +00:00
Joseph Myers
24f4f8253f Add tests for namespace for static linking. 
One thing we currently try to ensure manually is that glibc is
namespace-clean for static linking; that is, if you only use features
from a particular standard (including the set of features exposed by
headers given feature test macros such as _DEFAULT_SOURCE that don't
correspond to any written standard), the library objects brought in by
the static linker will not define or use (strong) names that are
reserved to the user in that standard.

This patch implements automatic tests for this, using the same set of
standards as for the header conformance tests (it would, however, be
easy to add more standards for this testing, without them needing to
have the definitions of expected header contents for the header
tests).  The tests are based on the functions declared in each header,
as extracted using GCC's -aux-info option.  The following comment from
linknamespace.pl explains the caveats around this approach:

Here's an example of the output for ISO (C90) assert.h, from before my
recent fixes and whitelisting of cases that seem more complicated to
fix:

[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] __get_nprocs -> [libc.a(getsysstats.o)] fgets_unlocked
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] fileno
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] fread_unlocked
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] ftello
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] malloc_info
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_default_locale_path -> [libc.a(findlocale.o)] memmem
[initial] __assert_perror_fail -> [libc.a(assert-perr.o)] __strerror_r -> [libc.a(_strerror.o)] mempcpy
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] _nl_find_domain -> [libc.a(finddomain.o)] _nl_expand_alias -> [libc.a(localealias.o)] qsort -> [libc.a(msort.o)] qsort_r
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize -> [libc.a(dl-support.o)] __rawmemchr -> [libc.a(rawmemchr.o)] rawmemchr
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __getcwd -> [libc.a(getcwd.o)] rewinddir
[initial] __assert_fail -> [libc.a(assert.o)] stderr
[initial] __assert_fail -> [libc.a(assert.o)] stderr -> [libc.a(stdio.o)] stdin
[initial] __assert_fail -> [libc.a(assert.o)] stderr -> [libc.a(stdio.o)] stdout
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] stpcpy
[initial] __assert_fail -> [libc.a(assert.o)] __fxprintf -> [libc.a(fxprintf.o)] _IO_vfprintf -> [libc.a(vfprintf.o)] __printf_fp -> [libc.a(printf_fp.o)] wmemset

Of the 161 XFAILs, seven are the inevitable varargs.h and ndbm.h
failures; I think the remaining 154 mostly represent genuine bugs in
glibc that should mostly be straightforward to fix (probably rather
fewer than 154 bugs - issues generally affect multiple headers, for
multiple standards).  (When fixing, of course you need to file a bug
in Bugzilla, and check for the possibility that the header
conditionals are what's incorrect - that the first listed symbol
shouldn't have been declared, or that the symbol finally brought in
should have been declared.)

	* conform/GlibcConform.pm: New file.
	* conform/conformtest.pl: Use GlibcConform module.
	* conform/linknamespace.pl: New file.
	* conform/list-header-symbols.pl: Likewise.
	* conform/Makefile (linknamespace-symlists-base): New variable.
	(linknamespace-symlists-tests): Likewise.
	(linknamespace-header-base): Likewise.
	(linknamespace-header-tests): Likewise.
	(tests-special): Add new tests.
	($(linknamespace-symlists-tests)): New rule.
	(linknamespace-libs): New variable.
	($(objpfx)symlist-stdlibs): New rule.
	($(linknamespace-header-tests)): Likewise.
	(test-xfail-XPG3/varargs.h/linknamespace): New variable.
	(test-xfail-XPG4/varargs.h/linknamespace): Likewise.
	(test-xfail-UNIX98/varargs.h/linknamespace): Likewise.
	(test-xfail-XPG4/ndbm.h/linknamespace): Likewise.
	(test-xfail-UNIX98/ndbm.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/ndbm.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/ndbm.h/linknamespace): Likewise.
	(test-xfail-ISO/math.h/linknamespace): Likewise.
	(test-xfail-ISO/signal.h/linknamespace): Likewise.
	(test-xfail-ISO/stdio.h/linknamespace): Likewise.
	(test-xfail-ISO/time.h/linknamespace): Likewise.
	(test-xfail-ISO99/complex.h/linknamespace): Likewise.
	(test-xfail-ISO99/ctype.h/linknamespace): Likewise.
	(test-xfail-ISO99/math.h/linknamespace): Likewise.
	(test-xfail-ISO99/signal.h/linknamespace): Likewise.
	(test-xfail-ISO99/stdio.h/linknamespace): Likewise.
	(test-xfail-ISO99/tgmath.h/linknamespace): Likewise.
	(test-xfail-ISO11/complex.h/linknamespace): Likewise.
	(test-xfail-ISO11/ctype.h/linknamespace): Likewise.
	(test-xfail-ISO11/math.h/linknamespace): Likewise.
	(test-xfail-ISO11/signal.h/linknamespace): Likewise.
	(test-xfail-ISO11/stdio.h/linknamespace): Likewise.
	(test-xfail-ISO11/tgmath.h/linknamespace): Likewise.
	(test-xfail-XPG3/ctype.h/linknamespace): Likewise.
	(test-xfail-XPG3/fnmatch.h/linknamespace): Likewise.
	(test-xfail-XPG3/glob.h/linknamespace): Likewise.
	(test-xfail-XPG3/math.h/linknamespace): Likewise.
	(test-xfail-XPG3/regex.h/linknamespace): Likewise.
	(test-xfail-XPG3/search.h/linknamespace): Likewise.
	(test-xfail-XPG3/stdio.h/linknamespace): Likewise.
	(test-xfail-XPG3/time.h/linknamespace): Likewise.
	(test-xfail-XPG3/unistd.h/linknamespace): Likewise.
	(test-xfail-XPG3/wordexp.h/linknamespace): Likewise.
	(test-xfail-XPG4/ctype.h/linknamespace): Likewise.
	(test-xfail-XPG4/fmtmsg.h/linknamespace): Likewise.
	(test-xfail-XPG4/fnmatch.h/linknamespace): Likewise.
	(test-xfail-XPG4/glob.h/linknamespace): Likewise.
	(test-xfail-XPG4/grp.h/linknamespace): Likewise.
	(test-xfail-XPG4/libgen.h/linknamespace): Likewise.
	(test-xfail-XPG4/math.h/linknamespace): Likewise.
	(test-xfail-XPG4/netdb.h/linknamespace): Likewise.
	(test-xfail-XPG4/pwd.h/linknamespace): Likewise.
	(test-xfail-XPG4/regex.h/linknamespace): Likewise.
	(test-xfail-XPG4/search.h/linknamespace): Likewise.
	(test-xfail-XPG4/stdio.h/linknamespace): Likewise.
	(test-xfail-XPG4/stdlib.h/linknamespace): Likewise.
	(test-xfail-XPG4/sys/mman.h/linknamespace): Likewise.
	(test-xfail-XPG4/sys/statvfs.h/linknamespace): Likewise.
	(test-xfail-XPG4/syslog.h/linknamespace): Likewise.
	(test-xfail-XPG4/time.h/linknamespace): Likewise.
	(test-xfail-XPG4/unistd.h/linknamespace): Likewise.
	(test-xfail-XPG4/wordexp.h/linknamespace): Likewise.
	(test-xfail-POSIX/aio.h/linknamespace): Likewise.
	(test-xfail-POSIX/fnmatch.h/linknamespace): Likewise.
	(test-xfail-POSIX/glob.h/linknamespace): Likewise.
	(test-xfail-POSIX/math.h/linknamespace): Likewise.
	(test-xfail-POSIX/mqueue.h/linknamespace): Likewise.
	(test-xfail-POSIX/pthread.h/linknamespace): Likewise.
	(test-xfail-POSIX/regex.h/linknamespace): Likewise.
	(test-xfail-POSIX/sched.h/linknamespace): Likewise.
	(test-xfail-POSIX/semaphore.h/linknamespace): Likewise.
	(test-xfail-POSIX/sys/mman.h/linknamespace): Likewise.
	(test-xfail-POSIX/time.h/linknamespace): Likewise.
	(test-xfail-POSIX/unistd.h/linknamespace): Likewise.
	(test-xfail-POSIX/wordexp.h/linknamespace): Likewise.
	(test-xfail-UNIX98/aio.h/linknamespace): Likewise.
	(test-xfail-UNIX98/ctype.h/linknamespace): Likewise.
	(test-xfail-UNIX98/fmtmsg.h/linknamespace): Likewise.
	(test-xfail-UNIX98/fnmatch.h/linknamespace): Likewise.
	(test-xfail-UNIX98/glob.h/linknamespace): Likewise.
	(test-xfail-UNIX98/grp.h/linknamespace): Likewise.
	(test-xfail-UNIX98/libgen.h/linknamespace): Likewise.
	(test-xfail-UNIX98/math.h/linknamespace): Likewise.
	(test-xfail-UNIX98/mqueue.h/linknamespace): Likewise.
	(test-xfail-UNIX98/netdb.h/linknamespace): Likewise.
	(test-xfail-UNIX98/pthread.h/linknamespace): Likewise.
	(test-xfail-UNIX98/pwd.h/linknamespace): Likewise.
	(test-xfail-UNIX98/regex.h/linknamespace): Likewise.
	(test-xfail-UNIX98/sched.h/linknamespace): Likewise.
	(test-xfail-UNIX98/search.h/linknamespace): Likewise.
	(test-xfail-UNIX98/semaphore.h/linknamespace): Likewise.
	(test-xfail-UNIX98/stdio.h/linknamespace): Likewise.
	(test-xfail-UNIX98/stdlib.h/linknamespace): Likewise.
	(test-xfail-UNIX98/sys/mman.h/linknamespace): Likewise.
	(test-xfail-UNIX98/sys/statvfs.h/linknamespace): Likewise.
	(test-xfail-UNIX98/syslog.h/linknamespace): Likewise.
	(test-xfail-UNIX98/time.h/linknamespace): Likewise.
	(test-xfail-UNIX98/unistd.h/linknamespace): Likewise.
	(test-xfail-UNIX98/wchar.h/linknamespace): Likewise.
	(test-xfail-UNIX98/wordexp.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/aio.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/complex.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/fcntl.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/fmtmsg.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/fnmatch.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/glob.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/grp.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/libgen.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/math.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/mqueue.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/net/if.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/netdb.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/pthread.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/pwd.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/regex.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/search.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/semaphore.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/signal.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/spawn.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/stdlib.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/sys/mman.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/sys/statvfs.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/sys/wait.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/syslog.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/tgmath.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/time.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/ucontext.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/unistd.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K/wordexp.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/aio.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/complex.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/ctype.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/dirent.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/fcntl.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/grp.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/math.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/mqueue.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/net/if.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/netdb.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/pthread.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/regex.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/semaphore.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/spawn.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/sys/mman.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/sys/statvfs.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/tgmath.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/time.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/unistd.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/aio.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/complex.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/dirent.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/fcntl.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/fmtmsg.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/grp.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/libgen.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/math.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/mqueue.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/netdb.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/pthread.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/pwd.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/regex.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/search.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/semaphore.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/spawn.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/sys/mman.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/sys/statvfs.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/syslog.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/tgmath.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/time.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/unistd.h/linknamespace): Likewise.
 2014-11-12 22:45:25 +00:00