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_STACK_GROWS_DOWN is defined to 0 when the stack grows up. The
code in unwind.c used `#ifdef _STACK_GROWS_DOWN' to selct the
stack grows down define for FRAME_LEFT. As a result, the
_STACK_GROWS_DOWN define was always selected and cleanups were
incorrectly sequenced when the stack grows up.
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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 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
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We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date. Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.
Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions. These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.
The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively. These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:
https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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It's necessary to stub out __libc_disable_asynccancel and
__libc_enable_asynccancel via rtld-stubbed-symbols because the new
direct references to the unwinder result in symbol conflicts when the
rtld exception handling from libc is linked in during the construction
of librtld.map.
unwind-forcedunwind.c is merged into unwind-resume.c. libc now needs
the functions that were previously only used in libpthread.
The GLIBC_PRIVATE exports of __libc_longjmp and __libc_siglongjmp are
no longer needed, so switch them to hidden symbols.
The symbol __pthread_unwind_next has been moved using
scripts/move-symbol-to-libc.py.
Reviewed-by: Adhemerva Zanella <adhemerval.zanella@linaro.org>
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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Building glibc with GCC 11 fails with (among other warnings) spurious
-Wstringop-overflow warnings from calls to setjmp and longjmp with a
pointer to a pthread_unwind_buf that is smaller than jmp_buf. As
discussed in bug 26647, the warning in libc-start.c is a false
positive, because setjmp and longjmp do not access anything (the
signal mask) beyond the common prefix of the two structures, so this
patch disables the warning for that call to setjmp, as well as for two
calls in NPTL code that produce the same warning and look like false
positives for the same reason.
Tested with build-many-glibcs.py for arm-linux-gnueabi, where this
allows the build to get further.
Reviewed-by: DJ Delorie <dj@redhat.com>
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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sysdeps/nptl/configure.ac tests for forced unwind support and the C
cleanup attribute, giving errors if either is unsupported. It does
nothing beyond running those two tests.
Both the attribute, and _Unwind_GetCFA which is used in the forced
unwind test, were added in GCC 3.3. Thus these tests are long
obsolete, and this patch removes the configure fragment running them,
along with associated conditionals.
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).
* sysdeps/nptl/configure.ac: Remove file.
* sysdeps/nptl/configure: Remove generated file.
* configure.ac (libc_cv_forced_unwind): Do not substitute.
* configure: Regenerated.
* config.h.in (HAVE_FORCED_UNWIND): Remove #undef.
* config.make.in (have-forced-unwind): Remove variable.
* nptl/Makefile [$(have-forced-unwind) = yes]: Make code
unconditional.
* nptl/descr.h [HAVE_FORCED_UNWIND]: Likewise.
* nptl/unwind.c [HAVE_FORCED_UNWIND]: Likewise.
(__pthread_unwind) [!HAVE_FORCED_UNWIND]: Remove conditional code.
* nptl/version.c [HAVE_FORCED_UNWIND]: Make code unconditional.
* sysdeps/nptl/Makefile [$(have-forced-unwind) = yes]: Make code
unconditional.
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code."
This reverts commit c324fcfe75c3976ae0b16943df00710e1d0d74f7.
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* sysdeps/alpha/jmpbuf-unwind.h: Define __libc_unwind_longjmp.
* sysdeps/i386/jmpbuf-unwind.h: Likewise
* sysdeps/powerpc/jmpbuf-unwind.h: Likewise.
* sysdeps/s390/jmpbuf-unwind.h: Likewise.
* sysdeps/sh/jmpbuf-unwind.h: Likewise.
* sysdeps/sparc/sparc32/jmpbuf-unwind.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h: Likewise.
* sysdeps/x86_64/jmpbuf-unwind.h: Likewise.
* unwind.c: Use it.
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2003-12-18 Ulrich Drepper <drepper@redhat.com>
* tst-eintr1.c: Better error messages.
* Makefile (tests): Add tst-eintr2.
* tst-eintr2.c: New file.
2003-12-18 Jakub Jelinek <jakub@redhat.com>
* Makefile (tests): Add tst-cancel21 and tst-cancelx21.
(CFLAGS-tst-cancelx21.c): Set.
* tst-cancel21.c: New test.
* tst-cancelx21.c: New test.
* unwind.c (FRAME_LEFT): Add adj argument. Subtract it from each
comparison operand.
(unwind_stop): Use _JMPBUF_CFA_UNWINDS_ADJ macro instead of
_JMPBUF_CFA_UNWINDS. Adjust FRAME_LEFT invocations.
* pt-longjmp.c: Include jmpbuf-unwind.h.
(__pthread_cleanup_upto): Use _JMPBUF_UNWINDS_ADJ macro instead of
_JMPBUF_UNWINDS. Adjust compared pointers.
* init.c (__pthread_initialize_minimal_internal): Initialize
pd->stackblock_size.
* sysdeps/pthread/jmpbuf-unwind.h: Removed.
* sysdeps/alpha/jmpbuf-unwind.h: New file.
* sysdeps/i386/jmpbuf-unwind.h: New file.
* sysdeps/powerpc/jmpbuf-unwind.h: New file.
* sysdeps/s390/jmpbuf-unwind.h: New file.
* sysdeps/sh/jmpbuf-unwind.h: New file.
* sysdeps/sparc/sparc32/jmpbuf-unwind.h: New file.
* sysdeps/x86_64/jmpbuf-unwind.h: New file.
* sysdeps/ia64/jmpbuf-unwind.h: Include stdint.h.
(_JMPBUF_CFA_UNWINDS): Remove.
(_JMPBUF_CFA_UNWINDS_ADJ, _JMPBUF_UNWINDS_ADJ): Define.
2003-12-12 Jakub Jelinek <jakub@redhat.com>
* Makefile (tests): Add tst-cancel20 and tst-cancelx20.
(CFLAGS-tst-cancelx20.c): Set.
* tst-cancel20.c: New test.
* tst-cancelx20.c: New test.
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2003-11-05 Jakub Jelinek <jakub@redhat.com>
* unwind.c (FRAME_LEFT): Define.
(unwind_stop): Handle old style cleanups here.
(__pthread_unwind): Handle old style cleanups only if
!HAVE_FORCED_UNWIND.
* Makefile (tests): Add tst-cleanup4 and tst-cleanupx4.
(CFLAGS-tst-cleanupx4.c): Add -fexceptions.
($(objpfx)tst-cleanup4): Depend on $(objpfx)tst-cleanup4aux.o.
($(objpfx)tst-cleanupx4): Likewise.
* tst-cleanup4.c: New test.
* tst-cleanup4aux.c: New.
* tst-cleanupx4.c: New test.
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22003-09-04 Jakub Jelinek <jakub@redhat.com>
* sysdeps/generic/unwind.h (_Unwind_GetBSP): Add prototype.
003-09-03 Ulrich Drepper <drepper@redhat.com>
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2003-07-31 Jakub Jelinek <jakub@redhat.com>
* dlfcn/dlerror.c (once): New.
(dlerror): Call __libc_once.
(_dlerror_run): Remove once.
2003-07-31 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext):
Sync with 2.5.7 and 2.5.73 kernel changes.
2003-07-31 Jakub Jelinek <jakub@redhat.com>
* dlfcn/eval.c (funcall): Add noinline attribute to shut up warnings.
* elf/rtld.c (dl_main): Cast ElfW(Addr) arguments with %Zx/%Zd
formats to size_t.
* elf/dl-lookup.c (_dl_debug_bindings): Likewise.
* elf/tst-tls6.c (do_test): Use %zd format for l_tls_modid.
* elf/tst-tls8.c (do_test): Use %zd format for modid1 and modid2.
* gmon/tst-sprofil.c (main): Add parens to shut up warning.
* iconv/tst-iconv3.c (main): Use %td instead of %zd for pointer
difference argument.
* stdio-common/tst-wc-printf.c (main): Cast arguments with %C
format to wint_t.
* stdlib/tst-limits.c (main): For WORD_BIT and LONG_BIT, use
%d format and cast expected value to int.
* sysdeps/generic/libc-start.c (STATIC): Add
__attribute__((always_inline) if LIBC_START_MAIN is already defined.
* sysdeps/powerpc/fpu/w_sqrt.c (a_nan, a_inf): Change from uint32_t
to ieee_float_shape_type.
(__sqrt): Avoid type punning.
* sysdeps/powerpc/fpu/w_sqrtf.c (a_nan, a_inf): Change from uint32_t
to ieee_float_shape_type.
(__sqrtf): Avoid type punning.
* sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela): Don't define
refsym if in dl-conflict.c.
* sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/unix/sysv/linux/i386/semctl.c (union semun): Add __old_buf.
(__new_semctl): Shut up warning.
* sysdeps/unix/sysv/linux/semctl.c (union semun): Add __old_buf.
(__new_semctl): Shut up warning.
* sysdeps/unix/sysv/linux/shmctl.c (__new_shmctl): Wrap long lines.
Change old into union of __old_shmid_ds and __old_shminfo structs.
Adjust all users.
* wcsmbs/wcsmbs-tst1.c (main): Cast arguments with %C format to wint_t.
2003-07-31 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/utimes.c (__utimes): Fix actime and
modtime computation.
* sysdeps/unix/sysv/linux/futimes.c (__futimes): Likewise.
* sysdeps/posix/utimes.c (__utimes): Likewise.
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2003-07-08 Jakub Jelinek <jakub@redhat.com>
* pthreadP.h (__pthread_unwind_next, __pthread_register_cancel,
__pthread_unregister_cancel): Add prototypes and hidden_proto.
* unwind.c (__pthread_unwind_next): Add hidden_def.
* cleanup.c (__pthread_register_cancel, __pthread_unregister_cancel):
Likewise.
* sysdeps/unix/sysv/linux/i386/i486/sem_wait.S (__new_sem_wait):
Use HIDDEN_JUMPTARGET to jump to __pthread_unwind.
* sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S (sem_timedwait):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S (sem_wait): Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S (sem_timedwait):
Likewise.
* sysdeps/unix/sysv/linux/i386/pthread_once.S (__pthread_once): Use
HIDDEN_JUMPTARGET to call __pthread_register_cancel,
__pthread_unregister_cancel and __pthread_unwind_next.
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2003-07-03 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/librt-cancellation.c (__pthread_unwind): Remove
definition.
* pthreadP.h (__pthread_unwind): Add hidden_proto if used in
libpthread compilation.
* unwind.c (__pthread_unwind): Add hidden_def.
* Versions (libpthread) [GLIBC_PRIVATE]: Add __pthread_unwind.
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2003-05-31 Ulrich Drepper <drepper@redhat.com>
* libio/fileops.c (_IO_file_open): Don't mark as inline.
* sysdeps/ia64/elf/initfini.c ((gmon_initializer): Mark with
attribute used.
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2003-05-16 Ulrich Drepper <drepper@redhat.com>
* unwind.c: Include <unistd.h>.
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never be reached.
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* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
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2003-04-11 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/libc-start.c: Cleanup MAIN_AUXVEC_ARG handling.
Remove HAVE_CANCELBUF code. Replace with code using the new
initializers for unwind-based cleanup handling.
* sysdeps/generic/unwind.h: Update from latest gcc version.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Define labels in a few
places to allow unwind data generation.
* sysdeps/i386/bits/setjmp.h: Allow file to be included multiple times.
* sysdeps/x86_64/bits/setjmp.h: Likewise.
* sysdeps/sh/bits/setjmp.h: Likewise.
* sysdeps/powerpc/bits/setjmp.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/setjmp.h: Likewise.
* sysdeps/alpha/bits/setjmp.h: Likewise.
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