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ChangeLog
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ChangeLog
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2023-09-18 Bruno Haible <bruno@clisp.org>
Fix shared library support on Android.
Patch from <https://savannah.gnu.org/patch/index.php?10393>.
* m4/libtool.m4: On Android, fix library_names_spec and
hardcode_libdir_flag_spec.
2023-08-30 Bruno Haible <bruno@clisp.org>
Recognize the *-*-windows* config triplets introduced on 2023-06-26.
* configure.ac: Treat windows* as equivalent to mingw*.
* m4/efault.m4 (SV_SYSCALLS_EFAULT): Likewise.
2023-06-29 Bruno Haible <bruno@clisp.org>
Update the installation instructions for Windows.
* INSTALL.windows: Add a note about MSYS2.
2023-06-29 Bruno Haible <bruno@clisp.org>
Make the autoconf tests more robust.
Triggered by
https://gitlab.com/redhat/centos-stream/rpms/libsigsegv/-/blob/c9s/configure.patch
from Petr Šabata <contyk@redhat.com>.
* m4/fault.m4 (SV_TRY_FAULT): Mark the variables that are accessed by
the signal handler as 'volatile'.
2023-05-21 Bruno Haible <bruno@clisp.org>
Support creating shared libraries on Hurd/x86_64.
Patch from
<https://lists.gnu.org/archive/html/bug-hurd/2023-05/msg00086.html>.
* m4/libtool.m4 (_LT_ENABLE_LOCK): Treat Hurd/x86_64 like
Linux/x86_64.
2023-05-15 Bruno Haible <bruno@clisp.org>
Add support for Hurd through the POSIX API.
Suggested by Sergey Bugaev <bugaevc@gmail.com>.
* src/fault-hurd-i386-old.h: Renamed from src/fault-hurd-i386.h.
* src/fault-hurd-i386.h: New file, based on src/fault-hurd-i386-old.h.
* src/Makefile.am (noinst_HEADERS): Add fault-hurd-i386-old.h.
* configure.ac (CFG_FAULT): Use fault-hurd-i386.h or
fault-posix-ucontext.h when the POSIX API works on Hurd.
2023-05-14 Bruno Haible <bruno@clisp.org>
Tentative support for Hurd/x86_64.
Reported by Sergey Bugaev <bugaevc@gmail.com>.
* src/fault-hurd.h (SIGSEGV_FAULT_HANDLER_ARGLIST): Change type of
second parameter.
2023-05-14 Bruno Haible <bruno@clisp.org>
Fix comments.
* src/fault-hurd-i386.h: Fix comments, based on info by Sergey Bugaev in
<https://lists.gnu.org/archive/html/bug-hurd/2023-05/msg00210.html>.
2023-05-12 Bruno Haible <bruno@clisp.org>
Tentative support for Hurd/x86_64.
Reported by Samuel Thibault <samuel.thibault@ens-lyon.org>.
* src/fault-hurd-i386.h: Add support for x86_64 CPU.
* configure.ac (CFG_FAULT): Use fault-hurd-i386.h also on x86_64.
2023-02-26 Bruno Haible <bruno@clisp.org>
Modernize handling of m4 macro dirs.
* configure.ac (AC_CONFIG_MACRO_DIRS): Specify the m4 macro dirs here.
* Makefile.am (ACLOCAL_AMFLAGS): ... not here.
* autogen.sh: Update comments.
2023-02-11 Bruno Haible <bruno@clisp.org>
Don't let configure tests fail due to the picky clang 16 compiler.
clang 16 will report an error for -Wincompatible-function-pointer-types
by default.
Reported by Sam James <sam@gentoo.org> in
<https://savannah.gnu.org/bugs/index.php?63788>.
* configure.ac (MacOSX/Darwin7 PowerPC): Add a cast when assigning to
action.sa_sigaction.
2023-02-11 Bruno Haible <bruno@clisp.org>
Add support for clang 16 on OpenBSD and Mac OS X 10/PowerPC.
clang 16 will report an error for -Wincompatible-function-pointer-types
by default.
* src/handler-unix.c (install_for): Add a cast when assigning to
action.sa_sigaction.
2023-01-04 Bruno Haible <bruno@clisp.org>
Add support for macOS/x86_64 with clang 15.
Reported at <https://savannah.gnu.org/bugs/?63617>.
* src/handler-macos.c (sigsegv_leave_handler): Add a cast, to silence a
warning that became an error in clang 15.
* NEWS: Mention it.
2022-07-18 Bruno Haible <bruno@clisp.org>
Make autopull.sh more suited for continuous integration.
* autopull.sh: Support option --one-time.
2022-07-18 Bruno Haible <bruno@clisp.org>
Move gnulib-tool invocation back from autopull.sh to autogen.sh.
* autogen.sh: Revert last change. Improve comments.
* autopull.sh: Only call 'gitsub.sh pull'.
2022-07-17 Bruno Haible <bruno@clisp.org>
Split autogen.sh into autopull.sh and autogen.sh.
* autopull.sh: New file, based on autogen.sh.
* autogen.sh: Remove code that was moved to autopull.sh. Remove
--skip-gnulib option.
* HACKING: Mention autopull.sh.
* Makefile.am (EXTRA_DIST): Add HACKING, autogen.sh.
2022-07-10 Bruno Haible <bruno@clisp.org>
Optimize stackvma implementation for AIX 7.
Reported by Neha Jain <nehajain29@in.ibm.com> in
<https://lists.gnu.org/archive/html/bug-m4/2022-06/msg00005.html>
via Eric Blake.
* src/stackvma-aix.c: Add implementation that uses /proc/$pid/map,
based on src/stackvma-procfs.h and gnulib/lib/vma-iter.c.
(sigsegv_get_vma): Use it on AIX 7 or higher.
* configure.ac (CFG_STACKVMA): On AIX, use stackvma-aix.c always.
* NEWS: Mention the improvement.
2022-05-22 Bruno Haible <bruno@clisp.org>
Add GNU Project notice.
* JOIN-GNU: New file. Inspired by a suggestion from José E. Marchesi
on the gnu-prog-discuss mailing list.
* README: Refer to it.
* Makefile.am (EXTRA_DIST): Add it.
2022-05-15 Bruno Haible <bruno@clisp.org>
Switch to libtool 2.4.7.
* m4/libtool.m4: Update from libtool-2.4.7.
* m4/ltoptions.m4: Likewise.
* m4/ltsugar.m4: Likewise.
* m4/ltversion.m4: Likewise.
* m4/lt~obsolete.m4: Likewise.
* build-aux/ltmain.sh: Likewise.
2022-03-13 Bruno Haible <bruno@clisp.org>
Add support for Linux/PowerPC (32-bit) with musl libc.
Reported by Khem Raj <raj.khem@gmail.com> in
<https://lists.gnu.org/archive/html/m4-patches/2022-03/msg00000.html>.
* autogen.sh: Copy also musl.m4.
* configure.ac: Invoke gl_MUSL_LIBC.
* src/fault-linux-powerpc.h (SIGSEGV_FAULT_STACKPOINTER): In the 32-bit
case, handle musl libc differently.
* NEWS: Mention it.
2022-01-07 Bruno Haible <bruno@clisp.org>
Prepare for version 2.14.
* configure.ac (AC_INIT): Bump version to 2.14.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:7:0.
2022-01-07 Bruno Haible <bruno@clisp.org>
Improve support for Linux/LoongArch64.
* src/fault-linux-loongarch.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac (CFG_FAULT): Use this file on Linux/LoongArch64.
* NEWS: Mention it.
2021-09-13 Bruno Haible <bruno@clisp.org>
Improve support for OpenBSD/PowerPC64.
Based on a patch by Christian Weisgerber <naddy@mips.inka.de> at
<https://lists.gnu.org/archive/html/bug-gnulib/2021-09/msg00045.html>.
* src/fault-openbsd-powerpc.h (SIGSEGV_FAULT_STACKPOINTER): Define
differently in 64-bit mode.
* NEWS: Mention it.
2021-08-07 Bruno Haible <bruno@clisp.org>
tests: Silence some GCC warnings.
Patch by Paul Eggert.
* tests/test-catch-segv1.c, tests/test-catch-stackoverflow1.c,
tests/test-catch-stackoverflow2.c: Declare some functions and variables
static, to pacify GCC when warning about external functions missing
declarations.
2021-06-09 Bruno Haible <bruno@clisp.org>
tests: Hide a null pointer from the compiler's optimizations.
Patch by Paul Eggert.
* tests/test-catch-stackoverflow2.c (null_pointer_to_volatile_int): New
variable.
(main): Use it.
2021-06-06 Bruno Haible <bruno@clisp.org>
Avoid a gcc warning "declaration of 'sig' shadows a parameter".
Reported by Dmitry V. Levin <ldv@altlinux.org> in
<https://lists.gnu.org/archive/html/bug-gnulib/2021-06/msg00018.html>.
* src/handler-unix.c (sigsegv_handler): Use a different local variable
name than 'sig'.
2021-05-29 Bruno Haible <bruno@clisp.org>
Fix typo in comment.
* src/stackvma-procfs.c: Fix typo in comment, found by Paul Eggert.
* src/stackvma-vma-iter.c: Likewise.
* src/stackvma-beos.c: Likewise.
2021-05-16 Bruno Haible <bruno@clisp.org>
Avoid compilation error with glibc >= 2.34.
* lib/sigsegv.h.in (SIGSTKSZ): On glibc systems, redefine to a suitable
constant.
* m4/sigaltstack-longjmp.m4 (SV_TRY_LEAVE_HANDLER_LONGJMP): Likewise.
* m4/sigaltstack-siglongjmp.m4 (SV_TRY_LEAVE_HANDLER_SIGLONGJMP):
Likewise.
2021-05-16 Bruno Haible <bruno@clisp.org>
On Cygwin, use the sigaltstack-based approach by default.
* src/fault-cygwin.h: New file.
* src/fault-cygwin-i386.h: New file.
* src/stackvma-cygwin.c: New file, based on src/stackvma-netbsd.c.
* src/stackvma-vma-iter.c: Enable /proc-reading code also on Cygwin.
* src/Makefile.am (noinst_HEADERS): Add fault-cygwin.h,
fault-cygwin-i386.h.
(EXTRA_DIST): Add stackvma-cygwin.c.
* configure.ac: Use fault-cygwin-i386.h instead of
fault-posix-ucontext.h. Add --enable-support-old-cygwin option. When it
is not specified, use handler-unix.c and stackvma-cygwin.c
* NEWS: Mention that 64-bit Cygwin is now supported.
2021-05-16 Bruno Haible <bruno@clisp.org>
Simplify: Use the POSIX API instead of Mach API on newer macOS versions.
* src/fault-macos.h: New file.
* src/fault-macos-arm64.h: New file.
* src/fault-macos-i386.h: New file.
* src/fault-macos-powerpc.h: New file.
* src/Makefile.am (noinst_HEADERS): Add them.
* configure.ac (CFG_FAULT): On macOS 10.13 or newer, use fault-macos*.h
and handler-unix.c, instead of handler-macos.c.
2021-05-16 Bruno Haible <bruno@clisp.org>
Rename fault-macos-i386.h to fault-macos-i386-old.h.
* src/fault-macos-i386-old.h: Renamed from src/fault-macos-i386.h.
* configure.ac (CFG_FAULT): Update.
* src/Makefile.am (noinst_HEADERS): Likewise.
2021-05-16 Bruno Haible <bruno@clisp.org>
Simplify inclusion of stackvma-mincore.c.
* src/stackvma-mincore.c (mincore_get_vma): Renamed from
sigsegv_get_vma.
* src/stackvma-linux.c: No need to define 'sigsegv_get_vma' and 'STATIC'
macros before including stackvma-mincore.c.
* src/stackvma-freebsd.c: Likewise.
* src/stackvma-netbsd.c: Likewise.
* src/stackvma-mquery.c: Likewise.
* src/stackvma-procfs.c: Likewise.
* src/stackvma-aix.c: New file.
* src/Makefile.am (EXTRA_DIST): Add it.
* configure.ac (CFG_STACKVMA): Set to stackvma-aix.c instead of
stackvma-mincore.c.
2021-05-16 Bruno Haible <bruno@clisp.org>
Drop supporting outdated way of building on native Windows.
* autogen.sh: Don't create config.h.msvc, src/sigsegv.h.msvc.
* Makefile.msvc: Remove file.
* Makefile.am (EXTRA_DIST): Remove Makefile.msvc, config.h.msvc.
(config.h.msvc): Remove rule.
* src/Makefile.am (EXTRA_DIST): Remove sigsegv.h.msvc.
(sigsegv.h.msvc): Remove rule.
2021-05-16 Bruno Haible <bruno@clisp.org>
Moved sigaltstack.m4 and stack-direction.m4 to gnulib.
* m4/sigaltstack.m4: Remove file.
* m4/stack-direction.m4: Remove file.
* autogen.sh: Copy the two files from gnulib.
2021-05-16 Bruno Haible <bruno@clisp.org>
Avoid compiler warning.
* src/stackvma-netbsd.c (sigsegv_get_vma): Avoid unreachable statement.
2021-05-15 Bruno Haible <bruno@clisp.org>
Avoid warning on systems with musl libc.
* src/stackvma-mincore.c (pageinfo_t): Treat all libcs on Linux like
glibc.
2021-05-15 Bruno Haible <bruno@clisp.org>
Rename test files.
* tests/test-catch-segv1.c: Renamed from tests/sigsegv1.c.
* tests/test-catch-segv2.c: Renamed from tests/sigsegv3.c.
* tests/test-catch-stackoverflow1.c: Renamed from
tests/stackoverflow1.c.
* tests/test-catch-stackoverflow2.c: Renamed from
tests/stackoverflow2.c.
* tests/test-segv-dispatcher1.c: Renamed from tests/sigsegv2.c.
* tests/altstack-util.h: Renamed from tests/altstack.h.
* tests/mmap-anon-util.h: Renamed from tests/mmaputil.h.
2021-05-15 Bruno Haible <bruno@clisp.org>
Improve comments.
* src/handler-unix.c: Mention Solaris 11 stack_violation().
* src/fault.h: SIGSEGV_FAULT_ADDRESS is not mandatory.
* src/stackvma-mquery.c: Update.
2021-05-15 Bruno Haible <bruno@clisp.org>
Fix possible warnings on AIX.
* src/stackvma-mincore.c (MINCORE_ADDR_T): Test _AIX, not UNIX_AIX.
2021-05-15 Bruno Haible <bruno@clisp.org>
Improve support for Solaris OpenIndiana.
* configure.ac: Make the test for <sys/procfs.h> succeed on Solaris
OpenIndiana even with -D_XOPEN_SOURCE=700.
* src/stackvma-procfs.c: Define __EXTENSIONS__, for Solaris OpenIndiana.
* NEWS: Mention the change.
2021-02-28 Bruno Haible <bruno@clisp.org>
Update DEPENDENCIES.
* DEPENDENCIES: List the normal dependencies of a package with an
Autoconf-generated configure file.
2021-02-20 Bruno Haible <bruno@clisp.org>
Support creating shared libraries on MidnightBSD.
Patch from <https://savannah.gnu.org/patch/?10007>.
* m4/libtool.m4: Treat MidnightBSD like FreeBSD.
* build-aux/ltmain.sh: Likewise.
* configure.ac (CFG_SIGNALS): Likewise.
* NEWS: Mention it.
2021-02-20 Bruno Haible <bruno@clisp.org>
Switch to autoconf 2.71.
* autogen.sh: Update comment.
2021-01-16 Bruno Haible <bruno@clisp.org>
Prepare for version 2.13.
* configure.ac (AC_INIT): Bump version to 2.13.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:6:0.
* NEWS: Add entries.
2021-01-16 Bruno Haible <bruno@clisp.org>
Add support for catching stack overflow on 64-bit Haiku.
* src/stackvma-beos.c (vma_iterate): Adapt to changed signature of
get_next_area_info.
2021-01-16 Bruno Haible <bruno@clisp.org>
Fix compilation errors and warnings on Solaris OpenIndiana.
* src/handler-unix.c: Define __EXTENSIONS__.
* src/stackvma-mincore.c: Likewise.
2021-01-16 Bruno Haible <bruno@clisp.org>
Override value of SIGSTKSZ on 64-bit Solaris/x86_64.
* src/sigsegv.h.in: On 64-bit Solaris/x86_64, set SIGSTKSZ to 16 KB.
2021-01-16 Bruno Haible <bruno@clisp.org>
Add support for catching stack overflow on Solaris 11/SPARC.
* src/fault-solaris11-sparc.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac (CFG_FAULT): Choose it on Solaris 11/SPARC.
2021-01-11 Bruno Haible <bruno@clisp.org>
Find stack detection reliably, even with GCC >= 10.
Reported by Andreas Schwab <schwab@gnu.org> in
<https://savannah.gnu.org/bugs/?59714>.
* m4/stack-direction.m4 (SV_STACK_DIRECTION): In the test program, use
the find_stack_direction function from Autoconf 2.70 (with parameters
that depend on argc, and with a recursion depth 20 instead of 2).
2021-01-11 Bruno Haible <bruno@clisp.org>
Switch to automake 1.16.3.
* autogen.sh: Update comment.
2020-12-08 Bruno Haible <bruno@clisp.org>
Switch to autoconf 2.70.
* autogen.sh: Update comment.
2020-12-04 Bruno Haible <bruno@clisp.org>
Improve support for FreeBSD/arm and FreeBSD/arm64.
* src/fault-freebsd-arm.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac (CFG_FAULT): Use this file on FreeBSD/arm and
FreeBSD/arm64.
2020-12-04 Bruno Haible <bruno@clisp.org>
Improve support for FreeBSD/x86 and FreeBSD/x86_64.
* src/fault-freebsd-i386.h: Add alternative code that uses SA_SIGINFO.
2020-12-04 Bruno Haible <bruno@clisp.org>
Add support for macOS on arm64.
Helped by Hill Ma <maahiuzeon@gmail.com> in
<https://savannah.gnu.org/bugs/?59539>.
* src/handler-macos.c (catch_exception_raise): Align the stack also on
arm64 CPUs.
2020-12-02 Bruno Haible <bruno@clisp.org>
Improve porting documentation.
* PORTING: Add some more porting tips.
2020-12-01 Bruno Haible <bruno@clisp.org>
Add configure option --disable-stackvma, for testing the fault-* files.
* configure.ac: Add option --enable/disable-stackvma. Set CFG_STACKVMA
to 'stackvma-none.c' if --disable-stackvma was specified.
2020-12-01 Bruno Haible <bruno@clisp.org>
Use canonical test for arm64 CPU.
This is for consistency with gnulib and with predef.sourceforge.net.
* configure.ac: Test __aarch64__, not __arm64__.
* src/handler-macos.c: Likewise.
* src/machfault-macos.h: Likewise.
* src/stackvma-mach.c: Likewise.
2020-11-29 Hill Ma <maahiuzeon@gmail.com>
mach: macos: preliminary support for darwin arm64.
* configure.ac: Treat macos/arm64 like the other macos platforms.
* src/handler-macos.c (sigsegv_leave_handler): On arm64, pass arguments
in registers.
* src/machfault-macos.h (SIGSEGV_*): Define appropriately for arm64.
* src/stackvma-mach.c (sigsegv_get_vma): On arm64, use 64-bit type
definitions.
2020-10-04 Bruno Haible <bruno@clisp.org>
build: Fix warnings from Autoconf 2.69c.
* configure.ac: Move AM_INIT_AUTOMAKE arguments to AC_INIT. Use
AC_CONFIG_HEADERS instead of AM_CONFIG_HEADER. Use AC_LINK_IFELSE.
Update AC_OUTPUT invocation.
2020-09-06 Bruno Haible <bruno@clisp.org>
build: Update after gnulib changed.
* configure.ac (AC_PREREQ): Bump minimum Autoconf version to 2.64.
2019-09-01 Bruno Haible <bruno@clisp.org>
build: Add support for shallow-cloning of subdirectories.
* gitsub.sh (func_usage): Document allowed git options with 'git pull'.
(func_pull): Accept GIT_OPTIONS argument.
(pull): Parse git options before complaining about too many arguments.
Pass the git options to func_pull.
2019-08-07 Nylon Chen <nylon7@andestech.com>
Improve support for Linux/NDS32.
* src/fault-linux-nds32.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac (CFG_FAULT): Use this file on Linux/NDS32.
* m4/stack-direction.m4: Add stack direction for NDS32.
2019-05-11 Bruno Haible <bruno@clisp.org>
Update bug reporting instructions.
* README: Tell users to report bugs in the bug tracker or by email.
2019-04-01 Bruno Haible <bruno@clisp.org>
build: Separate git operations from build operations.
* gitsub.sh: New file, from gnulib.
* .gitmodules: New file.
* autogen.sh: Remove all git operations. Look at GNULIB_SRCDIR
environment variable. Ignore the GNULIB_TOOL environment variable.
* HACKING: New file.
* DEPENDENCIES: New file.
2019-01-28 Bruno Haible <bruno@clisp.org>
Improve support for Android.
* src/stackvma-mincore.c (pageinfo_t): Set to 'unsigned char' on
Android.
* src/stackvma-rofile.c: Treat Android like Linux.
* src/stackvma-vma-iter.c: Likewise.
2018-11-13 Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Fix cross-compilation for RISC-V.
* m4/stack-direction.m4: Add stack direction for RISC-V.
2018-10-24 Bruno Haible <bruno@clisp.org>
Update after gnulib changed.
* configure.ac (AC_PREREQ): Require Autoconf >= 2.63.
2018-03-15 Bruno Haible <bruno@clisp.org>
Improve support for Linux/RISC-V.
* src/fault-linux-riscv64.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac (CFG_FAULT): Use this file on Linux/riscv64.
2018-02-18 Bruno Haible <bruno@clisp.org>
Avoid "warning: command substitution: ignored null byte in input".
Reported by Nelson Beebe.
* m4/bold.m4 (RSE_BOLD): For vt100, remove trailing NUL bytes. Only
physical terminals need these NULs; physical terminals are not in use
any more nowadays.
2018-02-03 Bruno Haible <bruno@clisp.org>
Fix compilation error on Solaris 11 Dyson in 64-bit mode.
* src/fault-solaris-i386.h (SIGSEGV_FAULT_STACKPOINTER): In 64-bit mode,
use the 64-bit stack pointer.
2018-01-27 Bruno Haible <bruno@clisp.org>
Rename some file.
* INSTALL.windows: Renamed from README.windows.
* Makefile.am (EXTRA_DIST): Update.
2018-01-16 Bruno Haible <bruno@clisp.org>
Prepare for new release.
* configure.ac: Bump version number to 2.12.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:5:0.
* NEWS: Mention some more improvements.
2018-01-16 Bruno Haible <bruno@clisp.org>
Correct distinction between stack overflow and other fault on AIX.
* src/stackvma-mincore.c (MINCORE_ADDR_T): New type.
(is_mapped, mapped_range_start, mapped_range_end): Use it.
* configure.ac: Don't use stackvma-procfs.c on AIX.
* NEWS: Mention the improvement.
2017-10-29 Bruno Haible <bruno@clisp.org>
Improve Haiku support.
* src/fault-haiku.h: New file.
* src/fault-haiku-i386.h: New file.
* src/Makefile.am (noinst_HEADERS): Add them.
* configure.ac: On Haiku, use fault-haiku-i386.h instead of just
fault-posix.h, and use stackvma-beos.c instead of stackvma-none.c.
* NEWS: Mention the improvement.
2017-10-09 Bruno Haible <bruno@clisp.org>
Avoid build failures caused by parallel make.
* Makefile.am (GNUMAKEFLAGS): New variable.
2017-10-08 Bruno Haible <bruno@clisp.org>
Make VMA detection more reliable on FreeBSD.
* src/stackvma-vma-iter.c (vma_iterate_proc): Extracted from vma_iterate.
(vma_iterate_bsd): New function.
(vma_iterate): Call both, in the appropriate order.
* src/stackvma-freebsd.c: Include <sys/user.h> and <sys/sysctl.h>.
2017-10-08 Bruno Haible <bruno@clisp.org>
Fix broken VMA detection on NetBSD (regression from 2017-10-07).
* src/stackvma-rofile.c (MIN_LEFTOVER): Define to 1, not 0.
2017-10-07 Bruno Haible <bruno@clisp.org>
Fix broken VMA detection on Linux (regression from 2017-09-28).
* src/stackvma-rofile.c (MIN_LEFTOVER): New macro.
(STACK_ALLOCATED_BUFFER_SIZE): New macro.
(rof_open): On Linux, do multiple read() calls and make sure
MIN_LEFTOVER bytes are left when read() returns.
2017-10-06 Bruno Haible <bruno@clisp.org>
Fix definition of SIGSEGV_FAULT_ADDRESS_ALIGNMENT: don't break clisp.
Existing versions of clisp expect that SIGSEGV_FAULT_ADDRESS_ALIGNMENT
is a constant expression. We cannot include a variable reference or
a function call in it.
* src/sigsegv.h.in (SIGSEGV_FAULT_ADDRESS_ALIGNMENT): Define as a
constant expression.
* tests/sigsegv1.c (SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS): Define based
on SIGSEGV_FAULT_ADDRESS_ALIGNMENT.
(handler): Use it.
* tests/sigsegv3.c: Likewise.
2017-10-05 Bruno Haible <bruno@clisp.org>
Fix support for NetBSD/sparc on SPARC64 machines.
* src/sigsegv.h.in (SIGSEGV_FAULT_ADDRESS_ALIGNMENT) [NetBSD/sparc]:
Use getpagesize().
* m4/fault.m4 (SV_TRY_FAULT): On NetBSD/sparc, use getpagesize().
2017-10-03 Bruno Haible <bruno@clisp.org>
Add support for NetBSD/sparc.
* src/sigsegv.h.in (SIGSEGV_FAULT_ADDRESS_ALIGNMENT) [NetBSD/sparc]:
Define to 0x1000.
* m4/fault.m4 (SV_TRY_FAULT): On NetBSD/sparc, set
SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS like on Linux/s390.
2017-10-03 Bruno Haible <bruno@clisp.org>
Fix a message.
* tests/sigsegv3.c (handler): Fix message.
2017-10-01 Bruno Haible <bruno@clisp.org>
Comment.
* configure.ac: Add a comment about GNU/Hurd.
2017-09-29 Bruno Haible <bruno@clisp.org>
Make stack VMA detection work on GNU/kFreeBSD even without mincore.
It needs to use the vma_iterate for Linux combined with the callback
for FreeBSD.
* src/stackvma-vma-iter.c: New file, extracted from
src/stackvma-linux.c, src/stackvma-freebsd.c, src/stackvma-netbsd.c.
* src/stackvma-linux.c: Include stackvma-vma-iter.c.
(vma_iterate): Moved to src/stackvma-vma-iter.c.
* src/stackvma-freebsd.c: Likewise.
* src/stackvma-netbsd.c: Likewise.
* src/Makefile.am (EXTRA_DIST): Add stackvma-vma-iter.c.
* configure.ac (CFG_STACKVMA): Treat GNU/kFreeBSD like FreeBSD.
2017-09-28 Bruno Haible <bruno@clisp.org>
Make stack VMA detection code more maintainable.
* src/stackvma-linux.c (struct callback_locals): New type.
(callback): New function.
(vma_iterate): New function, extracted from gnulib's lib/vma-iter.c.
(sigsegv_get_vma): Use vma_iterate.
* src/stackvma-freebsd.c: Likewise.
* src/stackvma-netbsd.c: Likewise.
* src/stackvma-beos.c: Likewise.
* src/stackvma-procfs.c: Likewise.
(sigsegv_get_vma_fallback): Inline and remove function.
2017-09-28 Bruno Haible <bruno@clisp.org>
Make stack VMA detection more reliable on Linux, FreeBSD, NetBSD.
* src/stackvma-rofile.c (struct rofile, rof_open, rof_peekchar,
rof_close): Read the entire file into memory in a single system call.
* src/stackvma-linux.c (sigsegv_get_vma): Update.
* src/stackvma-freebsd.c (sigsegv_get_vma): Likewise.
* src/stackvma-netbsd.c (sigsegv_get_vma): Likewise.
2017-07-15 Bruno Haible <bruno@clisp.org>
Get rid of autom4te.cache directory (left over from autoconf, automake).
* autogen.sh: Remove autom4te.cache directory.
2017-03-10 Bruno Haible <bruno@clisp.org>
Fix a comment.
* src/stackvma-mincore.c: Update comment regarding Mac OS X.
2017-03-04 Bruno Haible <bruno@clisp.org>
Avoid use of glibc-internal macros.
* src/fault-linux-arm.h: Use compiler-defined preprocessor macros,
rather than __WORDSIZE.
* src/fault-linux-powerpc.h: Likewise.
* src/fault-linux-sparc.h: Likewise.
* src/fault-linux-sparc-old.h: Likewise.
Reported by Andreas Schwab <schwab@linux-m68k.org>.
2017-02-21 Bruno Haible <bruno@clisp.org>
Improve Hurd/i386 support.
* src/fault-hurd-i386.h: New file.
* src/Makefile.am (noinst_HEADERS): Add it.
* configure.ac: Use it on Hurd/i386.
* NEWS: Document the improvement.
2017-02-18 Bruno Haible <bruno@clisp.org>
Prepare for new release.
* configure.ac: Bump version number to 2.11.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:4:0.
* NEWS: Mention the <stdint.h> requirement.
2017-02-18 Bruno Haible <bruno@clisp.org>
Improve cross-compilation guesses.
* configure.ac: Include results on kFreeBSD9.0.
Treat FreeBSD >= 10 like FreeBSD 4 to 9.
2017-02-18 Bruno Haible <bruno@clisp.org>
On Solaris, prefer the newer /proc fs API to the older (deprecated) one.
Reported by Roger Faulkner in
https://savannah.gnu.org/bugs/?42187 .
* configure.ac: Accept <sys/procfs.h> even if it does no longer define
PIOCNMAP and PIOCMAP.
* src/stackvma-procfs.c: Define _STRUCTURED_PROC before including
<sys/procfs.h>.
(sigsegv_get_vma_fallback): New function.
(sigsegv_get_vma): If PIOCNMAP and PIOCMAP are no longer defined, use
the newer /proc interface.
2017-02-18 Bruno Haible <bruno@clisp.org>
Override value of SIGSTKSZ on 64-bit AIX and on HP-UX.
* src/sigsegv.h.in: On 64-bit AIX, set SIGSTKSZ to 8 KB.
On HP-UX, set SIGSTKSZ to 16 KB.
* NEWS: Document the improvement.
2017-02-18 Bruno Haible <bruno@clisp.org>
Improve Linux/aarch64 support.
* src/fault-linux-arm.h: Add code for aarch64.
* configure.ac: For aarch64 platforms, use fault-linux-arm.h.
2017-02-18 Bruno Haible <bruno@clisp.org>
Make stack overflow detection work on Linux/sparc.
* src/fault-linux-sparc.h (SIGSEGV_FAULT_STACKPOINTER): Fix: ucp is a
'struct sigcontext *', not an 'ucontext_t *'.
(BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW): New macro.
* src/handler-unix.c (sigsegv_handler): Handle the
BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW case.
Handle errno consistently.
* NEWS: Document the improvement.
2017-02-18 Bruno Haible <bruno@clisp.org>
Fix glibc version determination.
* configure.ac (glibcversion): Use postprocessing that works also with
gcc 5 or newer.
2017-02-18 Bruno Haible <bruno@clisp.org>
Update comments.
* src/fault-linux-*.h: Update references to the glibc sources.
2017-01-10 Bruno Haible <bruno@clisp.org>
Update README.
* README: Prefer https URLs over http or ftp URLs.
2016-12-04 Bruno Haible <bruno@clisp.org>
Always use the newest released copies of files brought in from Automake.
* autogen.sh: Make sure to get new versions of files brought in by
automake.
2016-11-27 Bruno Haible <bruno@clisp.org>
Fix compilation error on Cygwin, regression from 2016-10-22.
* src/sigsegv.h.in: Include <stddef.h>.
2016-11-23 Bruno Haible <bruno@clisp.org>
Update installation instructions for Windows.
* README.windows: Assume a 64-bit Windows. Explain both 32-bit and
64-bit builds. Revamp instructions for the MS Visual C/C++ tool chain
and for Cygwin.
2016-11-23 Bruno Haible <bruno@clisp.org>
Drop the nickname "woe32".
* README.windows: Renamed from README.woe32.
* README: Update.
* Makefile.am (EXTRA_DIST): Update.
2016-10-22 Bruno Haible <bruno@clisp.org>
Support for platforms with 32-bit 'long' and 64-bit pointers.
* src/sigsegv.h.in: Use 'size_t' instead of 'unsigned long'.
* src/stackvma.h: Include <stdint.h>. Use 'uintptr_t' instead of
'unsigned long'.
* src/stackvma-*.c: Use 'uintptr_t' instead of 'unsigned long'.
* src/dispatcher.c: Include <stdint.h>. Use 'uintptr_t' or 'size_t'
instead of 'unsigned long'.
* src/handler-*.c: Likewise.
* tests/mmaputil.h: Use 'uintptr_t' or 'size_t' instead of
'unsigned long'.
* tests/sigsegv1.c: Include <stdint.h>. Use 'uintptr_t' instead of
'unsigned long'.
* tests/sigsegv2.c: Likewise.
* tests/sigsegv3.c: Likewise.
* tests/stackoverflow2.c: Likewise.
Reported by Nate Sigrist in <https://savannah.gnu.org/bugs/?37604>.
2016-10-22 Bruno Haible <bruno@clisp.org>
Switch to libtool 2.4.6.
* m4/libtool.m4: Update from libtool-2.4.6.
* m4/ltoptions.m4: Likewise.
* m4/ltversion.m4: Likewise.
* build-aux/ltmain.sh: Likewise.
2016-10-22 Bruno Haible <bruno@clisp.org>
Switch to automake 1.15.
* autogen.sh: Update comment.
* src/Makefile.am (AM_CPPFLAGS): Renamed from INCLUDES.
* tests/Makefile.am (AM_CPPFLAGS): Renamed from INCLUDES.
* build-aux/.gitignore: Ignore more files.
2015-12-03 Waldemar Brodkorb <wbx@uclibc-ng.org>
* src/fault-linux-sparc.h (SIGSEGV_FAULT_STACKPOINTER)
<__WORDSIZE == 64>: New macro.
2014-12-30 Simon Dawson <spdawson@gmail.com> (tiny change)
Will Newton <will.newton@linaro.org> (tiny change)
Spenser Gilliland <spenser@gillilanding.com> (tiny change)
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> (tiny change)
* m4/stack-direction.m4: Add stack direction info for various
processors.
2012-09-09 Bruno Haible <bruno@clisp.org>
Support for OpenBSD 5.2 on m88k and sh processors.
* src/fault-openbsd-m88k.h: Update for OpenBSD 5.2.
* src/fault-openbsd-sh.h: Likewise.
Reported by Brad Smith <brad@comstyle.com>
at <https://savannah.gnu.org/bugs/?37288>.
2012-04-28 Bruno Haible <bruno@clisp.org>
Allow use of autoconf-2.69 and automake-1.12.
* autogen.sh: Update comments.
2011-10-18 Bruno Haible <bruno@clisp.org>
* m4/libtool.m4: Update from libtool-2.4.2.
* m4/ltoptions.m4: Likewise.
* m4/ltversion.m4: Likewise.
* build-aux/ltmain.sh: Likewise.
2011-09-30 Bruno Haible <bruno@clisp.org>
Update known platforms list.
* configure.ac (POSIX): Add Linux/SPARC to the known platforms.
2011-09-30 Bruno Haible <bruno@clisp.org>
Work around an mprotect(...,PROT_READ) bug on Linux 2.6.26/SPARC64.
* m4/fault.m4 (SV_TRY_FAULT): On Linux/SPARC, use PROT_NONE instead of
PROT_READ.
* tests/sigsegv1.c (main): Likewise.
* tests/sigsegv2.c (main): Likewise.
* tests/sigsegv3.c (main): Likewise.
* tests/stackoverflow2.c (main): Likewise.
2011-09-10 Bruno Haible <bruno@clisp.org>
Adhere to Win32 API.
* src/handler-win32.c (main_exception_filter): Use
EXCEPTION_STACK_OVERFLOW, not STATUS_STACK_OVERFLOW.
2011-05-03 Eric Blake <eblake@redhat.com>
Avoid polluting cygwin namespace.
* configure.ac (FAULT_CONTEXT_INCLUDE): Avoid including
<windows.h> on cygwin.
Reported by Corinna Vinschen, via Aharon Robbins.
2011-04-03 Bruno Haible <bruno@clisp.org>
* Version 2.10 released.
2011-04-03 Bruno Haible <bruno@clisp.org>
Don't ask for success reports on MacOS X any more.
* Makefile.am (check-next): No longer ask for success reports on
MacOS X.
2011-04-03 Bruno Haible <bruno@clisp.org>
Bump version number.
* configure.ac: Bump version number to 2.10.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise. Recommend ftpmirror.gnu.org in the first place.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:3:0.
2011-03-13 Bruno Haible <bruno@clisp.org>
Support for Linux/S390.
* m4/fault.m4 (SV_TRY_FAULT): Define
SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS. On Linux/S390 systems, expect a
page-aligned fault address.
* src/sigsegv.h.in (SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS): New macro.
(sigsegv_register): Mention constraint about address and len arguments.
* tests/sigsegv1.c (handler): On Linux/S390 systems, expect a
page-aligned fault address.
* tests/sigsegv3.c (handler): Likewise.
* tests/sigsegv2.c: Add comment.
* NEWS: Document the change.
Reported by Christoph Egger <christoph@debian.org>.
2011-01-29 Bruno Haible <bruno@clisp.org>
Improve OpenBSD support: Allow faster VMA determination.
* configure.ac: Check also for mquery.
(CFG_STACKVMA): Set to stackvma-mquery.c if mquery() exists.
* src/stackvma-mquery.c: New file.
* src/Makefile.am (EXTRA_DIST): Add it.
* NEWS: Document the improvement.
2011-01-23 Bruno Haible <bruno@clisp.org>
Improve NetBSD support: Allow VMA determination with fewer system calls.
* src/stackvma-netbsd.c: New file, based on src/stackvma-freebsd.c.
* src/stackvma-freebsd.c: Add comment.
* src/Makefile.am (EXTRA_DIST): Add stackvma-netbsd.c.
* configure.ac (CFG_STACKVMA): Set to stackvma-netbsd.c on NetBSD.
2010-11-06 Bruno Haible <bruno@clisp.org>
* Version 2.9 released.
2010-11-06 Bruno Haible <bruno@clisp.org>
Bump version number.
* configure.ac: Bump version number to 2.9.
* src/sigsegv.h.in (LIBSIGSEGV_VERSION): Likewise.
* README: Likewise.
* src/Makefile.am (LIBSIGSEGV_VERSION_INFO): Bump to 2:2:0.
2010-11-06 Bruno Haible <bruno@clisp.org>
Start to use gnulib.
* autogen.sh: New option --skip-gnulib. Fetch gnulib if GNULIB_TOOL is
not set. Import m4/relocatable-lib.m4.
* configure.ac: Invoke gl_RELOCATABLE_NOP instead of
AC_RELOCATABLE_NOP.
* m4/relocatable.m4: Remove file.
2010-11-06 Bruno Haible <bruno@clisp.org>
Modernize autoconf macro style.
* configure.ac: Surround all macro arguments in brackets.
* m4/getpagesize.m4: Likewise.
* m4/mmap-anon.m4: Likewise.
* m4/sigaltstack.m4: Likewise.
2010-11-06 Bruno Haible <bruno@clisp.org>
Don't list files in .gitignore that are absent after "make distclean".
* .gitignore: Complete the list of files that are created by "make" and
removed by "make distclean". But comment them out, since they belong in
.git/info/exclude. Also remove /autom4te.cache because "make distclean"
does not remove it.
2010-10-25 Eric Blake <eblake@redhat.com>
Fix powerpc64-unknown-linux-gnu implementation.
* src/stackvma-rofile.c (struct rofile): Reduce size, to avoid
overflowing alternate stack when compiled under -O2.
* src/stackvma-mincore.c (mapped_range_start, mapped_range_end):
Likewise.
* NEWS: Document the fix.
2010-10-24 Eric Blake <eblake@redhat.com>
Bruno Haible <bruno@clisp.org>
Enhance the tests to detect overflow of the alternate stack.
* tests/altstack.h: New file.
* tests/Makefile.am (EXTRA_DIST): Add altstack.h.
* configure.ac: Invoke AC_TYPE_UINTPTR_T.
* tests/stackoverflow1.c: Include altstack.h.
(SIGSTKSZ): Remove definition.
(mystack): Remove definition.
(main): Invoke prepare_alternate_stack and
check_alternate_stack_no_overflow.
* tests/stackoverflow2.c: Likewise.
* tests/efault2.c: Likewise.