| Commit message (Collapse) | Author | Age | Files | Lines |
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If libc_hidden_builtin_{def,proto} isn't properly set for *_chk routines,
there are unwanted PLT entries in libc.so.
There is a special case with __asprintf_chk:
If ldbl_* macros are used for asprintf, ABI gets broken on s390x,
if it isn't, ppc64le isn't building due to multiple asm redirections.
This is due to the inclusion of bits/stdio-lbdl.h for ppc64le whereas it
isn't for s390x. This header creates redirections, which are not
compatible with the ones generated using libc_hidden_def.
Yet, we can't use libc_hidden_ldbl_proto on s390x since it will not
create a simple strong alias (e.g. as done on x86_64), but a versioned
alias, leading to ABI breakage.
This results in errors on s390x:
/usr/bin/ld: glibc/iconv/../libio/bits/stdio2.h:137: undefined reference
to `__asprintf_chk'
Original __asprintf_chk symbols:
00000000001395b0 T __asprintf_chk
0000000000177e90 T __nldbl___asprintf_chk
__asprintf_chk symbols with ldbl_* macros:
000000000012d590 t ___asprintf_chk
000000000012d590 t __asprintf_chk@@GLIBC_2.4
000000000012d590 t __GI___asprintf_chk
000000000012d590 t __GL____asprintf_chk___asprintf_chk
0000000000172240 T __nldbl___asprintf_chk
__asprintf_chk symbols with the patch:
000000000012d590 t ___asprintf_chk
000000000012d590 T __asprintf_chk
000000000012d590 t __GI___asprintf_chk
0000000000172240 T __nldbl___asprintf_chk
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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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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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^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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The _chk variants of all of the printf functions become much simpler.
This is the last thing that we needed _IO_acquire_lock_clear_flags2
for, so it can go as well. I took the opportunity to make the headers
included and the names of all local variables consistent across all the
affected files.
Since we ultimately want to get rid of __no_long_double as well, it
must be possible to get all of the nontrivial effects of the _chk
functions by calling the _internal functions with appropriate flags.
For most of the __(v)xprintf_chk functions, this is covered by
PRINTF_FORTIFY plus some up-front argument checks that can be
duplicated. However, __(v)sprintf_chk installs a custom jump table so
that it can crash instead of overflowing the output buffer. This
functionality is moved to __vsprintf_internal, which now has a
'maxlen' argument like __vsnprintf_internal; to get the unsafe
behavior of ordinary (v)sprintf, pass -1 for that argument.
obstack_printf_chk and obstack_vprintf_chk are no longer in the same
file.
As a side-effect of the unification of both fortified and non-fortified
vdprintf initialization, this patch fixes bug 11319 for __dprintf_chk
and __vdprintf_chk, which was previously fixed only for dprintf and
vdprintf by the commit
commit 7ca890b88e6ab7624afb1742a9fffb37ad5b3fc3
Author: Ulrich Drepper <drepper@redhat.com>
Date: Wed Feb 24 16:07:57 2010 -0800
Fix reporting of I/O errors in *dprintf functions.
This patch adds a test case to avoid regressions.
Tested for powerpc and powerpc64le.
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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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__obstack_printf_chk): New prototypes.
(__vasprintf_chk, __vdprintf_chk,
__obstack_vprintf_chk): Likewise.
Add libc_hidden_proto.
* libio/obprintf.c
(_IO_obstack_jumps): No longer static, add attribute_hidden.
* libio/bits/stdio-ldbl.h (__asprintf_chk, __dprintf_chk,
__obstack_printf_chk, __vasprintf_chk, __vdprintf_chk,
__obstack_vprintf_chk): Add __LDBL_REDIR_DECL.
* libio/bits/stdio2.h (__asprintf_chk, __dprintf_chk,
__obstack_printf_chk, __vasprintf_chk, __vdprintf_chk,
__obstack_vprintf_chk): New prototypes.
(asprintf, __asprintf, dprintf, obstack_printf, vasprintf, vdprintf,
obstack_vprintf): New inlines.
* debug/dprintf_chk.c: New file.
* debug/vdprintf_chk.c: New file.
* debug/asprintf_chk.c: New file.
* debug/vasprintf_chk.c: New file.
* debug/obprintf_chk.c: New file.
* debug/tst-chk1.c (do_test): Add asprintf and obstack_printf tests.
* debug/Versions (__asprintf_chk, __dprintf_chk, __obstack_printf_chk,
__vasprintf_chk, __vdprintf_chk, __obstack_vprintf_chk): Export
@@GLIBC_2.8.
* debug/Makefile: Build asprintf_chk, vasprintf_chk, dprintf_chk,
vdprintf_chk and obprintf_chk, set CFLAGS for them.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.c (__nldbl___vasprintf_chk,
__nldbl___vdprintf_chk, __nldbl___obstack_vprintf_chk): Add
libc_hidden_proto.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl___vasprintf_chk,
__nldbl___vdprintf_chk, __nldbl___obstack_vprintf_chk): New prototypes.
* sysdeps/ieee754/ldbl-opt/Versions (__nldbl___asprintf_chk,
__nldbl___vasprintf_chk, __nldbl___dprintf_chk, __nldbl___vdprintf_chk,
__nldbl___obstack_printf_chk, __nldbl___obstack_vprintf_chk): Export
@@GLIBC_2.8.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add asprintf_chk,
vasprintf_chk, dprintf_chk, vdprintf_chk, obstack_printf_chk and
obstack_vprintf_chk.
* sysdeps/ieee754/ldbl-opt/nldbl-obstack_vprintf_chk.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-dprintf_chk.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-obstack_printf_chk.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-asprintf_chk.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-vdprintf_chk.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-vasprintf_chk.c: New file.
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