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Joseph Myers aac0d8a9a3 Fix -Os gnu_dev_* linknamespace, localplt issues (bug 15105, bug 19463). 
Building with -Os produces linknamespace and localplt failures for,
among other functions, gnu_dev_major, gnu_dev_minor and
gnu_dev_makedev.

The issue is that those functions are not inlined when building with
-Os.  While one could force them to be inlined in that case, it seems
more natural to fix this issue similarly to other namespace issues.
Thus, this patch makes gnu_dev_* into weak aliases for hidden symbols
__gnu_dev_*; __gnu_dev_* are then defined as inlines in the internal
include/sys/sysmacros.h, and uses of gnu_dev_* (often via the macros
major, minor and makedev) for which there are namespace issues are
changed to use __gnu_dev_*; where there are no namespace issues, use
of libc_hidden_proto serves to avoid unnecessary local PLT entry use.

Tested for x86_64, (a) without -Os, to verify the testsuite continues
to pass without problems and that the functions called under their new
names continue to be inlined as expected in that case; (b) with -Os,
to verify that the linknamespace and localplt failures in question go
away (but because of other such failures present, neither of the
relevant bugs can yet be closed).

	[BZ #15105]
	[BZ #19463]
	* include/sys/sysmacros.h [!_ISOMAC]
	(__SYSMACROS_NEED_IMPLEMENTATION): Define macro.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC]
	(_SYS_SYSMACROS_H_WRAPPER): Likewise.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (gnu_dev_major): Use
	libc_hidden_proto.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (gnu_dev_minor): Likewise.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (gnu_dev_makedev):
	Likewise.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (__SYSMACROS_DECL_TEMPL):
	Undefine and redefine to add use __gnu_dev_ prefix.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (__SYSMACROS_IMPL_TEMPL):
	Likewise.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (__gnu_dev_major): Declare
	and define as hidden inline function.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (__gnu_dev_minor):
	Likewise.
	[!_SYS_SYSMACROS_H_WRAPPER && !_ISOMAC] (__gnu_dev_makedev):
	Likewise.
	* misc/makedev.c (OUT_OF_LINE_IMPL_TEMPL): Use __gnu_dev_ prefix.
	(gnu_dev_major): Use weak_alias and libc_hidden_weak.
	(gnu_dev_minor): Likewise.
	(gnu_dev_makedev): Likewise.
	* csu/check_fds.c (check_one_fd): Use __gnu_dev_makedev instead of
	makedev.
	* posix/wordexp.c (exec_comm_child): Likewise.
	* sysdeps/mach/hurd/xmknodat.c (__xmknodat): Use __gnu_dev_minor
	instead of minor and __gnu_dev_major instead of major.
	* sysdeps/unix/sysv/linux/device-nrs.h (DEV_TTY_P): Use
	__gnu_dev_major instead of major.
	* sysdeps/unix/sysv/linux/pathconf.c (distinguish_extX): Use
	__gnu_dev_major instead of gnu_dev_major and __gnu_dev_minor
	instead of gnu_dev_minor.
	* sysdeps/unix/sysv/linux/ptsname.c (MASTER_P): Likewise.
	(SLAVE_P): Likewise.
	(__ptsname_internal): Use __gnu_dev_minor instead of minor.
	* sysdeps/unix/sysv/linux/ttyname.h (is_pty): Use __gnu_dev_major
	instead of major.

(cherry picked from commit 8b4a118222)
2021-11-15 14:31:46 -08:00
..
bits Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sys [BZ #19239] Don't include sys/sysmacros.h from sys/types.h. 2021-08-27 17:26:00 -07:00
acct.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ar.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
brk.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bug18240.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bug-hsearch1.c .. 2009-01-23 20:41:36 +00:00
chflags.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
chroot.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
daemon.c Consolidate non cancellable close call 2017-08-18 18:38:55 -03:00
dirname.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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fstab.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
fstab.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
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getpass.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getsysstats.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getttyent.c misc: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
getusershell.c Use (void) in no-arguments function definitions. 2013-06-08 00:22:23 +00:00
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gtty.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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lutimes.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
madvise.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
makedev.c Fix -Os gnu_dev_* linknamespace, localplt issues (bug 15105, bug 19463). 2021-11-15 14:31:46 -08:00
Makefile Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mincore.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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mktemp.c Forward-port cl/42676407 to disable link-time warning about mktemp, tempnam and tmpnam. 2021-08-27 17:23:15 -07:00
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preadv2.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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stab.h Update. 1997-06-21 02:59:26 +00:00
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swapoff.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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syscall.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscall.h update from main archive 960107 1997-01-07 23:29:44 +00:00
sysexits.h Update. 1999-06-09 13:08:30 +00:00
syslog.c misc: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
syslog.h initial import 1995-02-18 01:27:10 +00:00
truncate64.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
truncate.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tsearch.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tst-atomic-long.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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tst-efgcvt.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tst-empty.c Move all tests out of the csu subdirectory 2016-12-21 11:52:19 +01:00
tst-error1.c Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
tst-fdset.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tst-hsearch.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-insremque.c [BZ #2766] 2006-06-17 17:01:42 +00:00
tst-makedev.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tst-mntent2.c Fix warning in misc/tst-mntent2.c. 2014-12-16 10:27:16 +01:00
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tst-mntent-blank-passno.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tst-mntent.c getmntent: fix memory corruption w/blank lines [BZ #18887] 2015-08-29 18:07:00 -04:00
tst-preadvwritev2-common.c Update RWF_SUPPORTED for Linux kernel 4.16 [BZ #22947] 2021-08-27 16:22:10 -07:00
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tst-pselect.c misc/tst-pselect.c: Add copyright header 2018-01-02 22:07:59 +01:00
tst-tsearch.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ttyent.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
ttyslot.c As a minor cleanup remove the (r)index defines from include/string.h as 2017-02-06 18:15:18 +00:00
ualarm.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
usleep.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ustat.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ustat.h Thu Jul 18 04:33:21 1996 Roland McGrath <roland@baalperazim.frob.com> 1996-07-18 08:43:26 +00:00
utimes.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Versions Clean pthread functions namespaces for C11 threads 2017-06-23 17:38:17 -03:00
vhangup.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
writev.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00