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2024-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert
2023-01-06Update copyright dates with scripts/update-copyrightsJoseph Myers
2022-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert
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
2021-01-02Update copyright dates with scripts/update-copyrightsPaul Eggert
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
2020-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
2019-09-07Prefer https to http for gnu.org and fsf.org URLsPaul Eggert
Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^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
2019-02-03libio: Use stdin consistently for input functions [BZ #24153]Florian Weimer
The internal _IO_stdin_ variable is not updated when the application assigns to stdin, which is a GNU extension.
2019-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
* 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.
2018-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
* 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.
2017-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae
2013-06-08Use (void) in no-arguments function definitions.Joseph Myers
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert
2001-07-06Update to LGPL v2.1.Andreas Jaeger
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
1999-06-21Update.Ulrich Drepper
1999-06-21 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * libio/Makefile (routines): Add putwchar and putwchar_u. * libio/putwchar.c: Include <wchar.h> instead of "stdio.h". * libio/putwchar_u.c: Likewise. Use _IO_stdout instead of stdout. Fix parameter name. * libio/getchar.c: Consistently use _IO_stdin instead of stdin. * libio/getchar_u.c: Likewise. * libio/putchar_u.c: Use _IO_stdout instead of stdout. 1999-06-21 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * include/features.h (__GNUC_PREREQ): Don't generate `defined' via macro expansion---it's undefined. Properly parenthesize substituted parameters. (__GLIBC_PREREQ): Likewise.
1997-08-20Update.cvs/libc-ud-970819Ulrich Drepper
1997-08-20 05:30 Ulrich Drepper <drepper@cygnus.com> * catgets/catgets.c (catclose): Use __munmap instead of munmap. * catgets/gencat.c (read_input_file): Fix typo. * dirent/dirent.h: Make seekdir and telldir available for __USE_XOPEN. * elf/dl-load.c: Fix case of missing DT_RPATH in object which gets executed (e.g., when it is a static binary). * intl/bindtextdomain.c: Use strdup in glibc. Correct comment. * intl/dcgettext.c: Likewise. * intl/dgettext.c: Likewise. * intl/explodename.c: Likewise. * intl/finddomain.c: Likewise. * intl/gettext.c: Likewise. * intl/gettext.h: Likewise. * intl/hash-string.h: Likewise. * intl/l10nflist.c: Likewise. * intl/libintl.h: Likewise. * intl/loadinfo.h: Likewise. * intl/loadmsgcat.c: Likewise. * intl/localealias.c: Likewise. * intl/textdomain.c: Likewise. Unify libio sources with code in libg++. * libio/fcloseall.c: Update and reformat copyright. Protect use of weak_alias. Use _IO_* thread macros instead of __libc_*. * libio/feof.c: Likewise. * libio/feof_u.c: Likewise. * libio/ferror.c: Likewise. * libio/ferror_u.c: Likewise. * libio/fgetc.c: Likewise. * libio/filedoalloc.c: Likewise. * libio/fileno.c: Likewise. * libio/fileops.c: Likewise. * libio/fputc.c: Likewise. * libio/fputc_u.c: Likewise. * libio/freopen.c: Likewise. * libio/fseek.c: Likewise. * libio/genops.c: Likewise. * libio/getc.c: Likewise. * libio/getc_u.c: Likewise. * libio/getchar.c: Likewise. * libio/getchar_u.c: Likewise. * libio/iofclose.c: Likewise. * libio/iofdopen.c: Likewise. * libio/iofflush.c: Likewise. * libio/iofflush_u.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofopen.c: Likewise. * libio/iofopncook.c: Likewise. * libio/iofprintf.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogetline.c: Likewise. * libio/iogets.c: Likewise. * libio/iopadn.c: Likewise. * libio/iopopen.c: Likewise. * libio/ioputs.c: Likewise. * libio/ioseekoff.c: Likewise. * libio/ioseekpos.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/iosprintf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/iovdprintf.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/obprintf.c: Likewise. * libio/pclose.c: Likewise. * libio/peekc.c: Likewise. * libio/putc.c: Likewise. * libio/putchar.c: Likewise. * libio/rewind.c: Likewise. * libio/setbuf.c: Likewise. * libio/setlinebuf.c: Likewise. * libio/stdfiles.c: Likewise. * libio/stdio.c: Likewise. * libio/strfile.h: Likewise. * libio/strops.c: Likewise. * libio/vasprintf.c: Likewise. * libio/vscanf.c: Likewise. * libio/vsnprintf.c: Likewise. * manual/libc.texinfo: Add menu entries for chapter on message translation. * manual/locale.texi: Correct next entry in @node for new chapter. * manual/search.texi: Likewise for previous link. * manual/message.texi: New file. * manual/startup.texi: Document LC_ALL, LC_MESSAGES, NLSPATH, setenv, unsetenv, and clearenv. * manual/string.texi: Fix typos. Patch by Jim Meyering. * math/Makefile (test-longdouble-yes): Enable. We want long double tests now. Crusade against strcat. * nis/nss_nisplus/nisplus-publickey.c: Remove uses of strcat. * stdlib/canonicalize.c: Likewise. * posix/glob.h: Define __const if necessary. Use __const in all prototypes. * sysdeps/generic/stpcpy.c: Use K&R form to allow use in other GNU packages. * posix/wordexp.c: Completely reworked buffer handling for much better performance. Patch by Tim Waugh. * socket/sys/sochet.h (getpeername): Fix type of LEN parameter, it must be socklen_t. * sysdeps/libm-i387/e_remainder.S: Pretty print. * sysdeps/libm-i387/e_remainderf.S: Likewise. * sysdeps/libm-i387/e_remainderl.S: Pop extra value for FPU stack. * sysdeps/libm-i387/s_cexp.S: Little optimization. * sysdeps/libm-i387/s_cexpl.S: Likewise. * sysdep/libm-ieee754/s_csinhl.c: Include <fenv.h>. 1997-08-18 15:21 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/if_index.c (if_nameindex): Fix memory leak in cleanup code. 1997-08-17 Paul Eggert <eggert@twinsun.com> * tzset.c (__tzset_internal): Fix memory leak when the user specifies a TZ value that uses a default rule file. Do not assume US DST rules when the user specifies that there is no DST. 1997-08-10 19:17 Philip Blundell <Philip.Blundell@pobox.com> * inet/getnameinfo.c: Tidy up. * sysdeps/posix/getaddrinfo.c: Likewise. * sysdeps/unix/sysv/linux/if_index.c (if_nametoindex): Return 0 if using stub code. (if_indextoname): Use SIOGIFNAME ioctl if the kernel supports it. (if_nameindex): Use alloca() rather than malloc(); use SIOCGIFCOUNT ioctl if the kernel supports it. 1997-08-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/sys/mount.h: Remove the IS_* macros, they operate on internal kernel structures and have no place in a user header. 1997-08-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules (lib%.so): Depend on $(+preinit) and $(+postinit). (build-shlib): Filter them out of $^. 1997-08-15 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-error.c (_dl_signal_error): Fix error message. 1997-08-16 04:06 Ulrich Drepper <drepper@cygnus.com> * assert/assert.h [__USE_GNU]: Undefine assert_perror. Reported by Theodore C. Belding <Ted.Belding@umich.edu>. 1997-08-13 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig: Change object suffixes from *.[spgb]o to *.o[spgb] to avoid conflict with PO files. * Makerules: Likewise. * Rules: Likewise. * elf/Makefile: Likewise. * extra-lib.mk: Likewise. * gmon/Makefile: Likewise. * nis/Makefile: Likewise. * nss/Makefile: Likewise. * resolv/Makefile: Likewise. * rpm/Makefile: Likewise. * sunrpc/Makefile: Likewise. * sysdeps/sparc/elf/Makefile: Likewise. * sysdeps/sparc64/elf/Makefile: Likewise. * sysdeps/unix/sysv/linux/sparc/Makefile: Likewise. (ASFLAGS-.os): Renamed from as-FLAGS.os.
1996-10-02update from main archive 961001Ulrich Drepper
1996-09-07update from main archive 960906cvs/libc-960907Ulrich Drepper
Sat Sep 7 05:15:45 1996 Ulrich Drepper <drepper@cygnus.com> * libio/iofdopen: Initialize _lock field only if _IO_MTSAFE_IO. * libio/iofopen: Likewise. * libio/iofopncook.c: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/memstream.c: Likewise. * libio/vasprintf.c: Likewise. * libio/vdprintf.c: Likewise. * libio/vsnprintf.c: Likewise. Sat Sep 7 03:55:47 1996 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (soversions.mk): Also use shlib-versions files in add-on directories. * config.make.in (config-defines): Remove. Not used anymore. (defines): New variable. Initiliazed by @DEFINES@. * configure.in: Add AC_SUBST(DEFINES). * libio/Makefile (routines): When compiling reentrant libc add clearerr_u, feof_u, ferror_u, fputc_u, getc_u, getchar_u, iofflush_u, putc_u, putchar_u, ioflockfile. (CPPFLAGS): Add -D_IO_MTSAFE_IO for reentrant libc. * sysdeps/stub/libc-lock.h: Add stubs for __libc_cleanup_region_start and __libc_cleanup_region_end. * sysdeps/unix/i386/sysdep.S [_LIBC_REENTRANT]: Set errno using __errno_location function. * sysdeps/unix/sysv/linux/i386/sysdep.S [_LIBC_REENTRANT]: Set errno using __errno_location function. (__errno_location): New function. * sysdeps/unix/sysv/linux/i386/sysdep.h [PIC]: Add second syscall_error handler for reentrant libc. * sysdeps/unix/opendir.c: Remove unneeded `;'. * libio.h [_IO_MTSAFE_IO]: Include <pthread.h>. [!_IO_MTSAFE_IO]: Define _IO_flockfile and _IO_funlockfile as empty macros. * libioP.h: Include <libc-lock.h>. * libio/stdio.h: Add prototypes for *_locked and *_unlocked functions. * libio/clearerr.c: Use _IO_ protected versions of flockfile and funlockfile to be namespace clean. * libio/genops.c: Use __libc_lock_* macros for handling lock. * libio/iofdopen: Add initialization of _lock in _IO_FILE. * libio/iofopen: Likewise. * libio/iofopncook.c: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/memstream.c: Likewise. * libio/vasprintf.c: Likewise. * libio/vdprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/fgetc.c: Use __libc_cleanup_region_* macros instead of flockfile etc. * libio/fputc.c: Likewise. * libio/freopen.c: Likewise. * libio/fseek.c: Likewise. * libio/getc.c: Likewise. * libio/getchar.c: Likewise. * libio/iofclose.c: Likewise. * libio/iofflush.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogets.c: Likewise. * libio/ioputs.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/putc.c: Likewise. * libio/putchar.c: Likewise. * libio/rewind.c: Likewise. * stdio-common/vfprintf.c: Likewise. * stdio-common/vfscanf.c: Likewise. * libio/clearerr_u.c: Correct alias name. * libio/ferror_u.c: Likewise. * libio/fileno.c: Likewise. * libio/fputc_u.c: Likewise. * libio/getc.c: Likewise. * libio/getc_u.c: Likewise. * libio/getchar.c: Likewise. * libio/getchar_u.c: Likewise. * libio/putc.c: Likewise. * libio/putchar.c: Likewise. * libio/feof_u.c: Undefine macro with name of function before definition of function itself. * libio/ioflockfile.c: New file. Implementation of flockfile and funlockfile. * libio/putchar_u.c: Fix typo. Use stdout instead of fp. * malloc/malloc.h: Don't include <libc-lock.h> and don't declare _malloc_loc. * malloc/free.c: Include <libc-lock.h>. * malloc/realloc.c: Likewise. * malloc/malloc-find.c: Likewise. * malloc/malloc-size.c: Likewise. * malloc/malloc-walk.c: Likewise. * malloc/memalign.c: Likewise. * malloc/malloc.c: Likewise. * sysdeps/i386/dl-machine.h: Correct clearing of _dl_starting_up. Fri Sep 6 19:38:49 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/stub/libc-lock.h: Define __libc_lock_critical_start and __libc_lock_critical_end as empty macros. * malloc/malloc.h: Don't include <libc-lock.h> and don't declare __libc_malloc_lock. * malloc/free.c: Include <libc-lock.h>. * malloc/malloc-find.c: Likewise. * malloc/malloc-size.c: Likewise. * malloc/malloc-walk.c: Likewise. * malloc/malloc.c: Likewise. * malloc/memalign.c: Likewise. * malloc/realloc.c: Likewise. * Makefile: Undo change from Mon Sep 2 22:15:14 1996. No more extra_solibs pass. * Rules: Likewise. * extra-lib.mk: Likewise. * manual/Makefile: Likewise. * db/Makefile (makedb): Choose dependecies based on build-shared. Patch by Andres Schwab. * sysdeps/posix/sysconf.c: Don't use PTHREAD_DESTRUCTOR_ITERATIONS but _POSIX_THREAD_DESTRUCTOR_ITERATIONS. * sysdeps/unix/sysv/linux/errnos.h: New file. * sysdeps/unix/sysv/linux/schedbits.h: New file. * sysdeps/unix/sysv/linux/waitflags.h: New file. * sysdeps/unix/sysv/linux/gnu/types.h: Add definition of `key_t'. Fri Sep 6 08:26:31 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * rpm/template: Fix typo in %build section. Fri Sep 6 03:31:07 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/errnos.h: Don't define errno macro when building libc without thread support. * resolv/netdb.h: Likewise for h_errno macro. Thu Sep 5 23:01:48 1996 Ulrich Drepper <drepper@cygnus.com> * libc-symbols.h: Add new macro weak_const_function. It's like weak_function, but the function is additionally marked as const. * features.h: Only include <sys/cdefs.h> if !__ASSEMBLER__. Thu Sep 5 22:55:49 1996 Richard Henderson <rth@tamu.edu> * inet/herrno.c (__h_errno_location): New function. (h_errno): Make strong_alias __h_errno so that we can access the variable even if `h_errno' is a macro. * resolv/netdb.h: Define macro h_errno to access thread specific version of h_errno variable. Declare alias __h_errno for h_errno. * resolv/res_query (h_errno): Remove definition. * sysdeps/unix/sysv/linux/errnos.h [!__ASSEMBLER__ && __USE_REENTRANT]: Add macro `errno' to get thread specific variable. * sysdeps/unix/alpha/sysdep.S [_LIBC_REENTRANT]: Set errno using __errno_location function. (__errno_location): New function. Thu Sep 5 21:08:44 1996 Ulrich Drepper <drepper@cygnus.com> * posix/gnu/types.h: Remove definition of key_t. * sysdeps/generic/gnu/types.h: Move it to here. * sysdeps/unix/sysv/linux/gnu/types.h: Add Linux specific definition of key_t. * sysdeps/unix/sysv/linux/waitflags.h: New file. Linux specific definitions. * sysdeps/unix/sysv/linux/schedbits.h: New file. Include clone prototypes and associated flags. Thu Sep 5 08:58:47 1996 Richard Henderson <rth@tamu.edu> * sysdeps/alpha/elf/start.S: Make _start global again. hertz. here. Wed Sep 4 16:16:13 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/hurd/send.c (__send): De-ANSI-fy. * sysdeps/mach/hurd/sendto.c (sendto): Likewise.
1996-05-09Wed May 8 20:04:29 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>Roland McGrath
* Rules (subdir_install): Depend on $(common-objpfx)sor-$(subdir). [! libc.so-version]: Clear static-only-routines. ($(common-objpfx)sor-$(subdir)): New target. [static-only-routines]: New static pattern rule for these .so's. * Makerules [libc.so-version] ($(slibdir)/libc.so): Target removed. [libc.so-version] ($(libdir)/libc.so, $(common-objpfx)libc-syms.so): New targets replace it. (install) [libc.so-version]: Depend on $(libdir)/libc.so instead of $(slibdir)/libc.so. * io/Makefile (static-only-routines): New variable. * configure.in: Check for tools objdump and objcopy, and for awk. * config.make.in (OBJDUMP, OBJCOPY, AWK): New variables. Thu May 9 01:24:00 1996 Ulrich Drepper <drepper@cygnus.com> * locale/programs/config.h: Remove definition of wint_t. * locale/programs/ld-collate.c: Include <wchar.h> instead of <wcstr.h>. * manual/time.texi: Add some more description for %U and %W format of strftime. Describe new format %V of strftime. * resolv/gethnamaddr.c: Prevent warning by preventing variable definition. * stdio-common/_itoa.c: Ditto. Tue May 7 23:43:07 1996 Ulrich Drepper <drepper@cygnus.com> * libio/clearerr.c, libio/feof.c, libio/ferror.c, libio/fgetc.c, libio/fileno.c, libio/fputc.c, libio/freopen.c, libio/fseek.c, libio/genops.c, libio/getc.c, libio/getchar.c, libio/iofclose.c, libio/iofflush.c, libio/iofgetpos.c, libio/iofgets.c, libio/iofputs.c, libio/iofread.c, libio/iofsetpos.c, libio/ioftell.c, libio/iofwrite.c, libio/iogetdelim.c, libio/iogets.c, libio/ioputs.c, libio/iosetbuffer.c, libio/iosetvbuf.c, libio/ioungetc.c, libio/iovsprintf.c, libio/libio.h, libio/putc.c, libio/putchar.c, libio/rewind.c, libio/stdio.h, stdio-common/printf_fp.c, stdio-common/vfprintf.c, stdio-common/vfscanf.c: Prepare for reentrent libio. * libio/clearerr_u.c, libio/feof_u.c, libio/ferror_u.c, libio/fputc_u.c, libio/getc_u.c, libio/getchar_u.c, libio/iofflush_u.c, libio/putc_u.c, libio/putchar_u.c: New files. Used in reentrent libio. * misc/getusershell.c: Prevent warnings.