Joseph Myers 7553131847 Fix struct sigaltstack namespace (bug 21517). ... glibc defines the stack_t type with the tag struct sigaltstack. This is not permitted by POSIX; sigaltstack is only reserved with file scope in the namespace of ordinary identifiers, not the tag namespace, and in the case where stack_t is obtained from ucontext.h rather than signal.h, it's not reserved with file scope at all. This patch removes the tag accordingly and updates uses in glibc of struct sigaltstack. This is similar to the removal of the "struct siginfo" tag a few years ago: C++ name mangling changes are an unavoidable consequence. A NEWS item is added to note the changed mangling. There is inevitably some risk of breaking builds of anything that relies on the struct sigaltstack name (though the first few hits I looked at from codesearch.debian.net generally seemed to involve code that could use the stack_t name conditionally, so depending on how they determine the conditionals they may work with glibc not defining the struct tag anyway). Tested for x86_64 and x86, and with build-many-glibcs.py. [BZ #21517] * bits/types/stack_t.h (stack_t): Remove struct tag. * sysdeps/unix/sysv/linux/bits/types/stack_t.h (stack_t): Likewise. * sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h (stack_t): Likewise. * debug/segfault.c (install_handler): Use stack_t instead of struct sigaltstack. * hurd/hurd/signal.h (struct hurd_sigstate): Likewise. * hurd/trampoline.c (_hurd_setup_sighandler): Likewise. * include/signal.h (__sigaltstack): Likwise. * signal/sigaltstack.c (__sigaltstack): Likewise. * signal/signal.h (sigaltstack): Likewise. * sysdeps/mach/hurd/i386/signal-defines.sym (SIGALTSTACK__SS_SP__OFFSET): Likewise. (SIGALTSTACK__SS_SIZE__OFFSET): Likewise. (SIGALTSTACK__SS_FLAGS__OFFSET): Likewise. * sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise. * sysdeps/mach/hurd/sigstack.c (sigstack): Likewise. * sysdeps/unix/sysv/linux/alpha/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c (CHECK_SP): Likewise. * sysdeps/unix/sysv/linux/ia64/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/m68k/____longjmp_chk.c (CHECK_SP): Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/sh/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/sys/procfs.h (struct elf_prstatus): Likewise.		2017-06-05 10:17:46 +00:00
..
aarch64	aarch64: Thunderx specific memcpy and memmove	2017-05-24 16:46:48 -07:00
alpha
arm	Fix more namespace issues in sys/ucontext.h (bug 21457).	2017-06-01 14:07:40 +00:00
generic	Fix sys/ucontext.h namespace from signal.h etc. inclusion (bug 21457).	2017-05-23 11:49:48 +00:00
gnu	Regenerate sysdeps/gnu/errlist.c.	2017-06-04 15:27:14 -04:00
hppa
i386	Fix more namespace issues in sys/ucontext.h (bug 21457).	2017-06-01 14:07:40 +00:00
ia64
ieee754	float128: Add wrappers to override ldbl-128 as float128.	2017-05-25 09:01:37 -03:00
init_array
m68k	Fix more namespace issues in sys/ucontext.h (bug 21457).	2017-06-01 14:07:40 +00:00
mach	Fix struct sigaltstack namespace (bug 21517).	2017-06-05 10:17:46 +00:00
microblaze
mips	Fix more namespace issues in sys/ucontext.h (bug 21457).	2017-06-01 14:07:40 +00:00
nios2
nptl
posix	getaddrinfo: Eliminate another strdup call	2017-06-03 08:37:31 +02:00
powerpc
pthread
s390
sh
sparc	Remove useless comment from sysdeps/sparc/sparc32/dl-machine.h	2017-05-23 01:10:29 +05:30
tile
unix	Fix struct sigaltstack namespace (bug 21517).	2017-06-05 10:17:46 +00:00
wordsize-32
wordsize-64
x86	x86: Update __x86_shared_non_temporal_threshold	2017-06-02 17:32:37 -07:00
x86_64	x86_64: Remove redundant REX bytes from memchr.S	2017-05-30 12:39:14 -07:00