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5a82c74822
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
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/* Tests of signal delivery on an alternate stack (_exit).
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Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/xsignal.h>
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#include <support/support.h>
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#include <support/check.h>
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#include <unistd.h>
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/* C2011 7.4.1.1p5 specifies that only the following operations are
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guaranteed to be well-defined inside an asynchronous signal handler:
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* any operation on a lock-free atomic object
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* assigning a value to an object declared as volatile sig_atomic_t
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* calling abort, _Exit, quick_exit, or signal
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* signal may only be called with its first argument equal to the
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number of the signal that caused the handler to be called
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We use this list as a guideline for the set of operations that ought
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also to be safe in a _synchronous_ signal delivered on an alternate
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signal stack with only MINSIGSTKSZ bytes of space.
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This test program tests calls to _exit, which is the same function
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as _Exit, but specified by POSIX rather than ISO C. For reasons
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unknown to the author of this program, the C committee did not
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think it could standardize _exit under that name; regardless, in a
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POSIX-conformant environment, they should be completely
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interchangeable. */
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#define EXPECTED_STATUS 3
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static void
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handler (int unused)
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{
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_exit (EXPECTED_STATUS);
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}
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int
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do_test (void)
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{
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void *sstk = xalloc_sigstack (0);
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struct sigaction sa;
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sa.sa_handler = handler;
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sa.sa_flags = SA_RESTART | SA_ONSTACK;
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sigfillset (&sa.sa_mask);
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if (sigaction (SIGUSR1, &sa, 0))
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FAIL_RET ("sigaction (SIGUSR1, handler): %m\n");
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raise (SIGUSR1);
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xfree_sigstack (sstk);
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FAIL_RET ("test process was not terminated by _exit in signal handler");
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}
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#include <support/test-driver.c>
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