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[Bug libc/21457] sys/ucontext.h namespace
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 09 Aug 2017 17:52:30 +0000
- Subject: [Bug libc/21457] sys/ucontext.h namespace
- Auto-submitted: auto-generated
- References: <bug-21457-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=21457
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3d452dabd1f063bdf251825a3ba5d68461921def
commit 3d452dabd1f063bdf251825a3ba5d68461921def
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Aug 9 17:51:26 2017 +0000
Fix uc_* namespace (bug 21457).
The standard members of ucontext_t, in all standard versions with that
type, are uc_link, uc_sigmask, uc_stack and uc_mcontext.
The uc_* namespace is mostly reserved for additions to the structure.
However, in XPG4.2, it's only reserved when <ucontext.h> is included,
not when <signal.h> is included, while <signal.h> is required to
define ucontext_t (but not allowed to make visible other symbols from
<ucontext.h>). Thus, nonstandard members should avoid uc_* names.
Some already do use __uc_*, but others don't; most architectures (all
except ia64, I think) have a member uc_flags and some have additional
members beyond that.
This patch makes nonstandard members have an __ prefix unless
__USE_MISC is defined. Members whose names indicate they are solely
padding / reserved for future use are renamed unconditionally to use
the __glibc_reserved1 naming convention.
This is part of the preparation for a revised version of the
mcontext_t / sigcontext patch to be able to eliminate all 13 of the
miscellaneous XFAILs in conform/Makefile, rather than only 11 of them
as at present (at least one further fix on top of this one will be
needed for that as well).
Tested for x86_64, and with build-many-glibcs.py.
[BZ #21457]
* sysdeps/arm/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/generic/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/i386/sys/ucontext.h (__ctx): Move undefine further down.
(__ctxt): Likewise.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/m68k/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/mips/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (__ctx): New
macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags and uc_regspace.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags, uc_regs_ptr, uc_regs and uc_reg_space.
Rename uc_pad to __glibc_reserved1.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (__ctx): Move undefine
further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 53 ++++++++++++++++++++++++
sysdeps/arm/sys/ucontext.h | 8 ++--
sysdeps/generic/sys/ucontext.h | 10 ++++-
sysdeps/i386/sys/ucontext.h | 10 ++--
sysdeps/m68k/sys/ucontext.h | 8 ++--
sysdeps/mips/sys/ucontext.h | 10 ++--
sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h | 10 ++++-
sysdeps/unix/sysv/linux/alpha/sys/ucontext.h | 10 ++++-
sysdeps/unix/sysv/linux/arm/sys/ucontext.h | 12 ++++-
sysdeps/unix/sysv/linux/hppa/sys/ucontext.h | 10 ++++-
sysdeps/unix/sysv/linux/m68k/sys/ucontext.h | 8 ++--
sysdeps/unix/sysv/linux/mips/sys/ucontext.h | 6 +-
sysdeps/unix/sysv/linux/nios2/sys/ucontext.h | 6 +-
sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h | 11 +++--
sysdeps/unix/sysv/linux/s390/sys/ucontext.h | 6 +-
sysdeps/unix/sysv/linux/sh/sys/ucontext.h | 6 +-
sysdeps/unix/sysv/linux/sparc/sys/ucontext.h | 4 +-
sysdeps/unix/sysv/linux/tile/sys/ucontext.h | 10 ++++-
sysdeps/unix/sysv/linux/x86/sys/ucontext.h | 4 +-
19 files changed, 152 insertions(+), 50 deletions(-)
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