Re: [Crash-utility] Kernel Crash Analysis on Android
by Shankar, AmarX
Hi Dave,
Thanks for your info regarding kexec tool.
I am unable to download kexec from below link.
http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/kexec-too...
It says HTTP 404 Page Not Found.
Could you please guide me on this?
Thanks & Regards,
Amar Shankar
> On Wed, Mar 21, 2012 at 06:00:00PM +0000, Shankar, AmarX wrote:
>
> > I want to do kernel crash Analysis on Android Merrifield Target.
> >
> > Could someone please help me how to do it?
>
> Merrifield is pretty much similar than Medfield, e.g it has x86 core. So I
> guess you can follow the instructions how to setup kdump on x86 (see
> Documentation/kdump/kdump.txt) unless you already have that configured.
>
> crash should support this directly presuming you have vmlinux/vmcore files to
> feed it. You can configure crash to support x86 on x86_64 host by running:
>
> % make target=X86
> & make
>
> (or something along those lines).
Right -- just the first make command will suffice, i.e., when running
on an x86_64 host:
$ wget http://people.redhat.com/anderson/crash-6.0.4.tar.gz
$ tar xzf crash-6.0.4.tar.gz
...
$ cd crash-6.0.4
$ make target=X86
...
$ ./crash <path-to>/vmlinux <path-to>/vmcore
Dave
From: Shankar, AmarX
Sent: Wednesday, March 21, 2012 11:30 PM
To: 'crash-utility(a)redhat.com'
Subject: Kernel Crash Analysis on Android
Hi,
I want to do kernel crash Analysis on Android Merrifield Target.
Could someone please help me how to do it?
Thanks & Regards,
Amar Shankar
10 months, 1 week
[PATCH] kmem, snap: iomem/ioport display and vmcore snapshot support
by HATAYAMA Daisuke
Some days ago I was in a situation that I had to convert vmcore in
kvmdump format into ELF since some extension module we have locally
can be used only on relatively old crash utility, around version 4,
but such old crash utility cannot handle kvmdump format.
To do the conversion in handy, I used snap command with some modifications
so that it tries to use iomem information in vmcore instead of host's
/proc/iomem. This patch is its cleaned-up version.
In this development, I naturally got down to also making an interface
for an access to resource objects, and so together with the snap
command's patch, I also extended kmem command for iomem/ioport
support. Actually:
kmem -r displays /proc/iomem
crash> kmem -r
00000000-0000ffff : reserved
00010000-0009dbff : System RAM
0009dc00-0009ffff : reserved
000c0000-000c7fff : Video ROM
...
and kmem -R displays /proc/ioport
crash> kmem -R
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
...
Looking into old version of kernel source code back, resource structure
has been unchanged since linux-2.4.0. I borrowed the way of walking on
resouce tree in this patch from the lastest v3.3-rc series, but I
guess the logic is also applicable to old kernels. I expect Dave's
regression testsuite.
Also, there would be another command more sutable for iomem/ioport.
If necessay, I'll repost the patch.
---
HATAYAMA Daisuke (4):
Add vmcore snapshot support
Add kmem -r and -R options
Add dump iomem/ioport functions; a helper for resource objects
Add a helper function for iterating resource objects
defs.h | 9 ++++
extensions/snap.c | 54 ++++++++++++++++++++++-
help.c | 2 +
memory.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++--
4 files changed, 180 insertions(+), 7 deletions(-)
--
Thanks.
HATAYAMA Daisuke
10 months, 1 week
Re: [Crash-utility] question about phys_base
by Dave Anderson
----- Original Message -----
> >
> > OK, so then I don't understand what you mean by "may be the same"?
> >
> > You didn't answer my original question, but if I understand you correctly,
> > it would be impossible for the qemu host to create a PT_LOAD segment that
> > describes an x86_64 guest's __START_KERNEL_map region, because the host
> > doesn't know that what kind of kernel the guest is running.
>
> Yes. Even if the guest is linux, it is still impossible to do it. Because
> the guest maybe in the second kernel.
>
> qemu-dump walks all guest's page table and collect virtual address and
> physical address mapping. If the page is not used by guest, the virtual is set
> to 0. I create PT_LOAD according to such mapping. So if the guest is linux,
> there may be a PT_LOAD segment that describes __START_KERNEL_map region.
> But the information stored in PT_LOAD maybe for the second kernel. If crash
> uses it, crash will see the second kernel, not the first kernel.
Just to be clear -- what do you mean by the "second" kernel? Do you
mean that a guest kernel crashed guest, and did a kdump operation,
and that second kdump kernel failed somehow, and now you're trying
to do a "virsh dump" on the kdump kernel?
Dave
10 months, 1 week
question about phys_base
by Wen Congyang
Hi, Dave
I am implementing a new dump command in the qemu. The vmcore's
format is elf(like kdump). And I try to provide phys_base in
the PT_LOAD. But if the os uses the first vcpu do kdump, the
value of phys_base is wrong.
I find a function x86_64_virt_phys_base() in crash's code.
Is it OK to call this function first? If the function
successes, we do not calculate phys_base according to PT_LOAD.
Thanks
Wen Congyang
10 months, 1 week
[PATCH] runq: search current task's runqueue explicitly
by HATAYAMA Daisuke
Currently, runq sub-command doesn't consider CFS runqueue's current
task removed from CFS runqueue. Due to this, the remaining CFS
runqueus that follow the current task's is not displayed. This patch
fixes this by making runq sub-command search current task's runqueue
explicitly.
Note that CFS runqueue exists for each task group, and so does CFS
runqueue's current task, and the above search needs to be done
recursively.
Test
====
On vmcore I made 7 task groups:
root group --- A --- AA --- AAA
+ +- AAB
|
+- AB --- ABA
+- ABB
and then I ran three CPU bound tasks, which is exactly the same as
int main(void) { for (;;) continue; return 0; }
for each task group, including root group; so total 24 tasks. For
readability, I annotated each task name with its belonging group name.
For example, loop.ABA belongs to task group ABA.
Look at CPU0 collumn below. [before] lacks 8 tasks and [after]
successfully shows all tasks on the runqueue, which is identical to
the result of [sched debug] that is expected to ouput correct result.
I'll send this vmcore later.
[before]
crash> runq | cat
CPU 0 RUNQUEUE: ffff88000a215f80
CURRENT: PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
RT PRIO_ARRAY: ffff88000a216098
[no tasks queued]
CFS RB_ROOT: ffff88000a216010
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
<cut>
[after]
crash_fix> runq
CPU 0 RUNQUEUE: ffff88000a215f80
CURRENT: PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
RT PRIO_ARRAY: ffff88000a216098
[no tasks queued]
CFS RB_ROOT: ffff88000a216010
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
[120] PID: 28271 TASK: ffff8800787a8b40 COMMAND: "loop.ABB"
[120] PID: 28272 TASK: ffff880037afd580 COMMAND: "loop.ABB"
[120] PID: 28245 TASK: ffff8800785e8b00 COMMAND: "loop.AB"
[120] PID: 28246 TASK: ffff880078628ac0 COMMAND: "loop.AB"
[120] PID: 28241 TASK: ffff880078616b40 COMMAND: "loop.AA"
[120] PID: 28239 TASK: ffff8800785774c0 COMMAND: "loop.AA"
[120] PID: 28240 TASK: ffff880078617580 COMMAND: "loop.AA"
[120] PID: 28232 TASK: ffff880079b5d4c0 COMMAND: "loop.A"
<cut>
[sched debug]
crash> runq -d
CPU 0
[120] PID: 28232 TASK: ffff880079b5d4c0 COMMAND: "loop.A"
[120] PID: 28239 TASK: ffff8800785774c0 COMMAND: "loop.AA"
[120] PID: 28240 TASK: ffff880078617580 COMMAND: "loop.AA"
[120] PID: 28241 TASK: ffff880078616b40 COMMAND: "loop.AA"
[120] PID: 28245 TASK: ffff8800785e8b00 COMMAND: "loop.AB"
[120] PID: 28246 TASK: ffff880078628ac0 COMMAND: "loop.AB"
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
[120] PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
[120] PID: 28271 TASK: ffff8800787a8b40 COMMAND: "loop.ABB"
[120] PID: 28272 TASK: ffff880037afd580 COMMAND: "loop.ABB"
<cut>
Diff stat
=========
defs.h | 1 +
task.c | 37 +++++++++++++++++--------------------
2 files changed, 18 insertions(+), 20 deletions(-)
Thanks.
HATAYAMA, Daisuke
10 months, 1 week
[RFC] makedumpfile, crash: LZO compression support
by HATAYAMA Daisuke
Hello,
This is a RFC patch set that adds LZO compression support to
makedumpfile and crash utility. LZO is as good as in size but by far
better in speed than ZLIB, leading to reducing down time during
generation of crash dump and refiltering.
How to build:
1. Get LZO library, which is provided as lzo-devel package on recent
linux distributions, and is also available on author's website:
http://www.oberhumer.com/opensource/lzo/.
2. Apply the patch set to makedumpfile v1.4.0 and crash v6.0.0.
3. Build both using make. But for crash, do the following now:
$ make CFLAGS="-llzo2"
How to use:
I've newly used -l option for lzo compression in this patch. So for
example, do as follows:
$ makedumpfile -l vmcore dumpfile
$ crash vmlinux dumpfile
Request of configure-like feature for crash utility:
I would like configure-like feature on crash utility for users to
select wheather to add LZO feature actually or not in build-time,
that is: ./configure --enable-lzo or ./configure --disable-lzo.
The reason is that support staff often downloads and installs the
latest version of crash utility on machines where lzo library is not
provided.
Looking at the source code, it looks to me that crash does some kind
of configuration processing in a local manner, around configure.c,
and I guess it's difficult to use autoconf tools directly.
Or is there another better way?
Performance Comparison:
Sample Data
Ideally, I must have measured the performance for many enough
vmcores generated from machines that was actually running, but now
I don't have enough sample vmcores, I couldn't do so. So this
comparison doesn't answer question on I/O time improvement. This
is TODO for now.
Instead, I choosed worst and best cases regarding compression
ratio and speed only. Specifically, the former is /dev/urandom and
the latter is /dev/zero.
I get the sample data of 10MB, 100MB and 1GB by doing like this:
$ dd bs=4096 count=$((1024*1024*1024/4096)) if=/dev/urandom of=urandom.1GB
How to measure
Then I performed compression for each block, 4096 bytes, and
measured total compression time and output size. See attached
mycompress.c.
Result
See attached file result.txt.
Discussion
For both kinds of data, lzo's compression was considerably quicker
than zlib's. Compression ratio is about 37% for urandom data, and
about 8.5% for zero data. Actual situation of physical memory
would be in between the two cases, and so I guess average
compression time ratio is between 37% and 8.5%.
Although beyond the topic of this patch set, we can estimate worst
compression time on more data size since compression is performed
block size wise and the compression time increases
linearly. Estimated worst time on 2TB memory is about 15 hours for
lzo and about 40 hours for zlib. In this case, compressed data
size is larger than the original, so they are really not used,
compression time is fully meaningless. I think compression must be
done in parallel, and I'll post such patch later.
Diffstat
* makedumpfile
diskdump_mod.h | 3 +-
makedumpfile.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++------
makedumpfile.h | 12 +++++++
3 files changed, 101 insertions(+), 12 deletions(-)
* crash
defs.h | 1 +
diskdump.c | 20 +++++++++++++++++++-
diskdump.h | 3 ++-
3 files changed, 22 insertions(+), 2 deletions(-)
TODO
* evaluation including I/O time using actual vmcores
Thanks.
HATAYAMA, Daisuke
10 months, 1 week
Re: [Crash-utility] [RFI] Support Fujitsu's sadump dump format
by tachibana＠mxm.nes.nec.co.jp
Hi Hatayama-san,
On 2011/06/29 12:12:18 +0900, HATAYAMA Daisuke <d.hatayama(a)jp.fujitsu.com> wrote:
> From: Dave Anderson <anderson(a)redhat.com>
> Subject: Re: [Crash-utility] [RFI] Support Fujitsu's sadump dump format
> Date: Tue, 28 Jun 2011 08:57:42 -0400 (EDT)
>
> >
> >
> > ----- Original Message -----
> >> Fujitsu has stand-alone dump mechanism based on firmware level
> >> functionality, which we call SADUMP, in short.
> >>
> >> We've maintained utility tools internally but now we're thinking that
> >> the best is crash utility and makedumpfile supports the sadump format
> >> for the viewpoint of both portability and maintainability.
> >>
> >> We'll be of course responsible for its maintainance in a continuous
> >> manner. The sadump dump format is very similar to diskdump format and
> >> so kdump (compressed) format, so we estimate patch set would be a
> >> relatively small size.
> >>
> >> Could you tell me whether crash utility and makedumpfile can support
> >> the sadump format? If OK, we'll start to make patchset.
I think it's not bad to support sadump by makedumpfile. However I have
several questions.
- Do you want to use makedumpfile to make an existing file that sadump has
dumped small?
- It isn't possible to support the same form as kdump-compressed format
now, is it?
- When the information that makedumpfile reads from a note of /proc/vmcore
(or a header of kdump-compressed format) is added by an extension of
makedumpfile, do you need to modify sadump?
Thanks
tachibana
> >
> > Sure, yes, the crash utility can always support another dumpfile format.
> >
>
> Thanks. It helps a lot.
>
> > It's unclear to me how similar SADUMP is to diskdump/compressed-kdump.
> > Does your internal version patch diskdump.c, or do you maintain your
> > own "sadump.c"? I ask because if your patchset is at all intrusive,
> > I'd prefer it be kept in its own file, primarily for maintainability,
> > but also because SADUMP is essentially a black-box to anybody outside
> > Fujitsu.
>
> What I meant when I used ``similar'' is both literally and
> logically. The format consists of diskdump header-like header, two
> kinds of bitmaps used for the same purpose as those in diskump format,
> and memory data. They can be handled in common with the existing data
> structure, diskdump_data, non-intrusively, so I hope they are placed
> in diskdump.c.
>
> On the other hand, there's a code to be placed at such specific
> area. sadump is triggered depending on kdump's progress and so
> register values to be contained in vmcore varies according to the
> progress: If crash_notes has been initialized when sadump is
> triggered, sadump packs the register values in crash_notes; if not
> yet, packs registers gathered by firmware. This is sadump specific
> processing, so I think putting it in specific sadump.c file is a
> natural and reasonable choise.
>
> Anyway, I have not made any patch set for this. I'll post a patch set
> when I complete.
>
> Again, thanks a lot for the positive answer.
>
> Thanks.
> HATAYAMA, Daisuke
>
>
> _______________________________________________
> kexec mailing list
> kexec(a)lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kexec
10 months, 1 week
[PATCH] Fix C99 compatibility issues in embedded copy of GDB
by Florian Weimer
These issues have been fixed in upstream GDB already:
In the file bfd/elf-bfd.h, startswith is now used in stead of
strncmp. libiberty was fixed via an import from GCC. Readline
8.1 has been imported and has these issues fixed upstream.
While at it, also update the bundled copy of <sys/cdefs.h> in
gnulib. This header file unfortunately shadows the glibc version,
causing build failures on ppc64le if it is too old.
---
Also submitted as a PR against Fedora rawhide:
<https://src.fedoraproject.org/rpms/crash/pull-request/2>
gdb-10.2.patch | 1019 +++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 1018 insertions(+), 1 deletion(-)
diff --git a/gdb-10.2.patch b/gdb-10.2.patch
index aa34743..fc560dd 100644
--- a/gdb-10.2.patch
+++ b/gdb-10.2.patch
@@ -12,7 +12,14 @@ tar xvzmf gdb-10.2.tar.gz \
gdb-10.2/gdb/symtab.c \
gdb-10.2/gdb/printcmd.c \
gdb-10.2/gdb/symfile.c \
- gdb-10.2/gdb/Makefile.in
+ gdb-10.2/gdb/Makefile.in \
+ gdb-10.2/bfd/elf-bfd.h \
+ gdb-10.2/gnulib/import/cdefs.h \
+ gdb-10.2/libiberty/aclocal.m4 \
+ gdb-10.2/libiberty/configure \
+ gdb-10.2/readline/readline/aclocal.m4 \
+ gdb-10.2/readline/readline/configure \
+ gdb-10.2/readline/readline/configure.ac \
exit 0
@@ -2078,3 +2085,1013 @@ exit 0
return new_type;
}
+diff --git gdb-10.2.orig/bfd/elf-bfd.h gdb-10.2/bfd/elf-bfd.h
+index eebdf9a..775d96c 100644
+--- gdb-10.2.orig/bfd/elf-bfd.h
++++ gdb-10.2/bfd/elf-bfd.h
+@@ -27,6 +27,8 @@
+ #include "elf/internal.h"
+ #include "bfdlink.h"
+
++#include <string.h>
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+diff --git gdb-10.2.orig/gnulib/import/cdefs.h gdb-10.2/gnulib/import/cdefs.h
+index d8e4a00..c37a3ff 100644
+--- gdb-10.2.orig/gnulib/import/cdefs.h
++++ gdb-10.2/gnulib/import/cdefs.h
+@@ -1,17 +1,18 @@
+-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
++/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
++ Copyright The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+- modify it under the terms of the GNU General Public
++ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+- version 3 of the License, or (at your option) any later version.
++ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+- General Public License for more details.
++ Lesser General Public License for more details.
+
+- You should have received a copy of the GNU General Public
++ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+@@ -25,16 +26,38 @@
+
+ /* The GNU libc does not support any K&R compilers or the traditional mode
+ of ISO C compilers anymore. Check for some of the combinations not
+- anymore supported. */
+-#if defined __GNUC__ && !defined __STDC__
+-# error "You need a ISO C conforming compiler to use the glibc headers"
++ supported anymore. */
++#if defined __GNUC__ && !defined __STDC__ && !defined __cplusplus
++# error "You need a ISO C or C++ conforming compiler to use the glibc headers"
+ #endif
+
+ /* Some user header file might have defined this before. */
+ #undef __P
+ #undef __PMT
+
+-#ifdef __GNUC__
++/* Compilers that lack __has_attribute may object to
++ #if defined __has_attribute && __has_attribute (...)
++ even though they do not need to evaluate the right-hand side of the &&.
++ Similarly for __has_builtin, etc. */
++#if (defined __has_attribute \
++ && (!defined __clang_minor__ \
++ || 3 < __clang_major__ + (5 <= __clang_minor__)))
++# define __glibc_has_attribute(attr) __has_attribute (attr)
++#else
++# define __glibc_has_attribute(attr) 0
++#endif
++#ifdef __has_builtin
++# define __glibc_has_builtin(name) __has_builtin (name)
++#else
++# define __glibc_has_builtin(name) 0
++#endif
++#ifdef __has_extension
++# define __glibc_has_extension(ext) __has_extension (ext)
++#else
++# define __glibc_has_extension(ext) 0
++#endif
++
++#if defined __GNUC__ || defined __clang__
+
+ /* All functions, except those with callbacks or those that
+ synchronize memory, are leaf functions. */
+@@ -47,21 +70,26 @@
+ # endif
+
+ /* GCC can always grok prototypes. For C++ programs we add throw()
+- to help it optimize the function calls. But this works only with
+- gcc 2.8.x and egcs. For gcc 3.2 and up we even mark C functions
++ to help it optimize the function calls. But this only works with
++ gcc 2.8.x and egcs. For gcc 3.4 and up we even mark C functions
+ as non-throwing using a function attribute since programs can use
+ the -fexceptions options for C code as well. */
+-# if !defined __cplusplus && __GNUC_PREREQ (3, 3)
++# if !defined __cplusplus \
++ && (__GNUC_PREREQ (3, 4) || __glibc_has_attribute (__nothrow__))
+ # define __THROW __attribute__ ((__nothrow__ __LEAF))
+ # define __THROWNL __attribute__ ((__nothrow__))
+ # define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct
+ # define __NTHNL(fct) __attribute__ ((__nothrow__)) fct
+ # else
+-# if defined __cplusplus && __GNUC_PREREQ (2,8)
+-# define __THROW throw ()
+-# define __THROWNL throw ()
+-# define __NTH(fct) __LEAF_ATTR fct throw ()
+-# define __NTHNL(fct) fct throw ()
++# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major >= 4)
++# if __cplusplus >= 201103L
++# define __THROW noexcept (true)
++# else
++# define __THROW throw ()
++# endif
++# define __THROWNL __THROW
++# define __NTH(fct) __LEAF_ATTR fct __THROW
++# define __NTHNL(fct) fct __THROW
+ # else
+ # define __THROW
+ # define __THROWNL
+@@ -70,7 +98,7 @@
+ # endif
+ # endif
+
+-#else /* Not GCC. */
++#else /* Not GCC or clang. */
+
+ # if (defined __cplusplus \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
+@@ -83,16 +111,7 @@
+ # define __THROWNL
+ # define __NTH(fct) fct
+
+-#endif /* GCC. */
+-
+-/* Compilers that are not clang may object to
+- #if defined __clang__ && __has_extension(...)
+- even though they do not need to evaluate the right-hand side of the &&. */
+-#if defined __clang__ && defined __has_extension
+-# define __glibc_clang_has_extension(ext) __has_extension (ext)
+-#else
+-# define __glibc_clang_has_extension(ext) 0
+-#endif
++#endif /* GCC || clang. */
+
+ /* These two macros are not used in glibc anymore. They are kept here
+ only because some other projects expect the macros to be defined. */
+@@ -123,14 +142,70 @@
+ #define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
+ #define __bos0(ptr) __builtin_object_size (ptr, 0)
+
++/* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available. */
++#if __USE_FORTIFY_LEVEL == 3 && (__glibc_clang_prereq (9, 0) \
++ || __GNUC_PREREQ (12, 0))
++# define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
++# define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
++#else
++# define __glibc_objsize0(__o) __bos0 (__o)
++# define __glibc_objsize(__o) __bos (__o)
++#endif
++
++#if __USE_FORTIFY_LEVEL > 0
++/* Compile time conditions to choose between the regular, _chk and _chk_warn
++ variants. These conditions should get evaluated to constant and optimized
++ away. */
++
++#define __glibc_safe_len_cond(__l, __s, __osz) ((__l) <= (__osz) / (__s))
++#define __glibc_unsigned_or_positive(__l) \
++ ((__typeof (__l)) 0 < (__typeof (__l)) -1 \
++ || (__builtin_constant_p (__l) && (__l) > 0))
++
++/* Length is known to be safe at compile time if the __L * __S <= __OBJSZ
++ condition can be folded to a constant and if it is true, or unknown (-1) */
++#define __glibc_safe_or_unknown_len(__l, __s, __osz) \
++ ((__builtin_constant_p (__osz) && (__osz) == (__SIZE_TYPE__) -1) \
++ || (__glibc_unsigned_or_positive (__l) \
++ && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
++ (__s), (__osz))) \
++ && __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), (__s), (__osz))))
++
++/* Conversely, we know at compile time that the length is unsafe if the
++ __L * __S <= __OBJSZ condition can be folded to a constant and if it is
++ false. */
++#define __glibc_unsafe_len(__l, __s, __osz) \
++ (__glibc_unsigned_or_positive (__l) \
++ && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
++ __s, __osz)) \
++ && !__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
++
++/* Fortify function f. __f_alias, __f_chk and __f_chk_warn must be
++ declared. */
++
++#define __glibc_fortify(f, __l, __s, __osz, ...) \
++ (__glibc_safe_or_unknown_len (__l, __s, __osz) \
++ ? __ ## f ## _alias (__VA_ARGS__) \
++ : (__glibc_unsafe_len (__l, __s, __osz) \
++ ? __ ## f ## _chk_warn (__VA_ARGS__, __osz) \
++ : __ ## f ## _chk (__VA_ARGS__, __osz)))
++
++/* Fortify function f, where object size argument passed to f is the number of
++ elements and not total size. */
++
++#define __glibc_fortify_n(f, __l, __s, __osz, ...) \
++ (__glibc_safe_or_unknown_len (__l, __s, __osz) \
++ ? __ ## f ## _alias (__VA_ARGS__) \
++ : (__glibc_unsafe_len (__l, __s, __osz) \
++ ? __ ## f ## _chk_warn (__VA_ARGS__, (__osz) / (__s)) \
++ : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s))))
++#endif
++
+ #if __GNUC_PREREQ (4,3)
+-# define __warndecl(name, msg) \
+- extern void name (void) __attribute__((__warning__ (msg)))
+ # define __warnattr(msg) __attribute__((__warning__ (msg)))
+ # define __errordecl(name, msg) \
+ extern void name (void) __attribute__((__error__ (msg)))
+ #else
+-# define __warndecl(name, msg) extern void name (void)
+ # define __warnattr(msg)
+ # define __errordecl(name, msg) extern void name (void)
+ #endif
+@@ -142,8 +217,8 @@
+ #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L && !defined __HP_cc
+ # define __flexarr []
+ # define __glibc_c99_flexarr_available 1
+-#elif __GNUC_PREREQ (2,97)
+-/* GCC 2.97 supports C99 flexible array members as an extension,
++#elif __GNUC_PREREQ (2,97) || defined __clang__
++/* GCC 2.97 and clang support C99 flexible array members as an extension,
+ even when in C89 mode or compiling C++ (any version). */
+ # define __flexarr []
+ # define __glibc_c99_flexarr_available 1
+@@ -169,7 +244,7 @@
+ Example:
+ int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
+
+-#if defined __GNUC__ && __GNUC__ >= 2
++#if (defined __GNUC__ && __GNUC__ >= 2) || (__clang_major__ >= 4)
+
+ # define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+ # ifdef __cplusplus
+@@ -194,17 +269,17 @@
+ */
+ #endif
+
+-/* GCC has various useful declarations that can be made with the
+- `__attribute__' syntax. All of the ways we use this do fine if
+- they are omitted for compilers that don't understand it. */
+-#if !defined __GNUC__ || __GNUC__ < 2
++/* GCC and clang have various useful declarations that can be made with
++ the '__attribute__' syntax. All of the ways we use this do fine if
++ they are omitted for compilers that don't understand it. */
++#if !(defined __GNUC__ || defined __clang__)
+ # define __attribute__(xyz) /* Ignore */
+ #endif
+
+ /* At some point during the gcc 2.96 development the `malloc' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+-#if __GNUC_PREREQ (2,96)
++#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__malloc__)
+ # define __attribute_malloc__ __attribute__ ((__malloc__))
+ #else
+ # define __attribute_malloc__ /* Ignore */
+@@ -219,26 +294,41 @@
+ # define __attribute_alloc_size__(params) /* Ignore. */
+ #endif
+
++/* Tell the compiler which argument to an allocation function
++ indicates the alignment of the allocation. */
++#if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__alloc_align__)
++# define __attribute_alloc_align__(param) \
++ __attribute__ ((__alloc_align__ param))
++#else
++# define __attribute_alloc_align__(param) /* Ignore. */
++#endif
++
+ /* At some point during the gcc 2.96 development the `pure' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+-#if __GNUC_PREREQ (2,96)
++#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__pure__)
+ # define __attribute_pure__ __attribute__ ((__pure__))
+ #else
+ # define __attribute_pure__ /* Ignore */
+ #endif
+
+ /* This declaration tells the compiler that the value is constant. */
+-#if __GNUC_PREREQ (2,5)
++#if __GNUC_PREREQ (2,5) || __glibc_has_attribute (__const__)
+ # define __attribute_const__ __attribute__ ((__const__))
+ #else
+ # define __attribute_const__ /* Ignore */
+ #endif
+
++#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
++# define __attribute_maybe_unused__ __attribute__ ((__unused__))
++#else
++# define __attribute_maybe_unused__ /* Ignore */
++#endif
++
+ /* At some point during the gcc 3.1 development the `used' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+-#if __GNUC_PREREQ (3,1)
++#if __GNUC_PREREQ (3,1) || __glibc_has_attribute (__used__)
+ # define __attribute_used__ __attribute__ ((__used__))
+ # define __attribute_noinline__ __attribute__ ((__noinline__))
+ #else
+@@ -247,7 +337,7 @@
+ #endif
+
+ /* Since version 3.2, gcc allows marking deprecated functions. */
+-#if __GNUC_PREREQ (3,2)
++#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__deprecated__)
+ # define __attribute_deprecated__ __attribute__ ((__deprecated__))
+ #else
+ # define __attribute_deprecated__ /* Ignore */
+@@ -256,8 +346,8 @@
+ /* Since version 4.5, gcc also allows one to specify the message printed
+ when a deprecated function is used. clang claims to be gcc 4.2, but
+ may also support this feature. */
+-#if __GNUC_PREREQ (4,5) || \
+- __glibc_clang_has_extension (__attribute_deprecated_with_message__)
++#if __GNUC_PREREQ (4,5) \
++ || __glibc_has_extension (__attribute_deprecated_with_message__)
+ # define __attribute_deprecated_msg__(msg) \
+ __attribute__ ((__deprecated__ (msg)))
+ #else
+@@ -270,7 +360,7 @@
+ If several `format_arg' attributes are given for the same function, in
+ gcc-3.0 and older, all but the last one are ignored. In newer gccs,
+ all designated arguments are considered. */
+-#if __GNUC_PREREQ (2,8)
++#if __GNUC_PREREQ (2,8) || __glibc_has_attribute (__format_arg__)
+ # define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
+ #else
+ # define __attribute_format_arg__(x) /* Ignore */
+@@ -280,7 +370,7 @@
+ attribute for functions was introduced. We don't want to use it
+ unconditionally (although this would be possible) since it
+ generates warnings. */
+-#if __GNUC_PREREQ (2,97)
++#if __GNUC_PREREQ (2,97) || __glibc_has_attribute (__format__)
+ # define __attribute_format_strfmon__(a,b) \
+ __attribute__ ((__format__ (__strfmon__, a, b)))
+ #else
+@@ -288,19 +378,33 @@
+ #endif
+
+ /* The nonnull function attribute marks pointer parameters that
+- must not be NULL. Do not define __nonnull if it is already defined,
+- for portability when this file is used in Gnulib. */
++ must not be NULL. This has the name __nonnull in glibc,
++ and __attribute_nonnull__ in files shared with Gnulib to avoid
++ collision with a different __nonnull in DragonFlyBSD 5.9. */
++#ifndef __attribute_nonnull__
++# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
++# define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
++# else
++# define __attribute_nonnull__(params)
++# endif
++#endif
+ #ifndef __nonnull
+-# if __GNUC_PREREQ (3,3)
+-# define __nonnull(params) __attribute__ ((__nonnull__ params))
++# define __nonnull(params) __attribute_nonnull__ (params)
++#endif
++
++/* The returns_nonnull function attribute marks the return type of the function
++ as always being non-null. */
++#ifndef __returns_nonnull
++# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__)
++# define __returns_nonnull __attribute__ ((__returns_nonnull__))
+ # else
+-# define __nonnull(params)
++# define __returns_nonnull
+ # endif
+ #endif
+
+ /* If fortification mode, we warn about unused results of certain
+ function calls which can lead to problems. */
+-#if __GNUC_PREREQ (3,4)
++#if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__)
+ # define __attribute_warn_unused_result__ \
+ __attribute__ ((__warn_unused_result__))
+ # if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
+@@ -314,7 +418,7 @@
+ #endif
+
+ /* Forces a function to be always inlined. */
+-#if __GNUC_PREREQ (3,2)
++#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__always_inline__)
+ /* The Linux kernel defines __always_inline in stddef.h (283d7573), and
+ it conflicts with this definition. Therefore undefine it first to
+ allow either header to be included first. */
+@@ -327,7 +431,7 @@
+
+ /* Associate error messages with the source location of the call site rather
+ than with the source location inside the function. */
+-#if __GNUC_PREREQ (4,3)
++#if __GNUC_PREREQ (4,3) || __glibc_has_attribute (__artificial__)
+ # define __attribute_artificial__ __attribute__ ((__artificial__))
+ #else
+ # define __attribute_artificial__ /* Ignore */
+@@ -370,12 +474,14 @@
+ run in pedantic mode if the uses are carefully marked using the
+ `__extension__' keyword. But this is not generally available before
+ version 2.8. */
+-#if !__GNUC_PREREQ (2,8)
++#if !(__GNUC_PREREQ (2,8) || defined __clang__)
+ # define __extension__ /* Ignore */
+ #endif
+
+-/* __restrict is known in EGCS 1.2 and above. */
+-#if !__GNUC_PREREQ (2,92)
++/* __restrict is known in EGCS 1.2 and above, and in clang.
++ It works also in C++ mode (outside of arrays), but only when spelled
++ as '__restrict', not 'restrict'. */
++#if !(__GNUC_PREREQ (2,92) || __clang_major__ >= 3)
+ # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+ # define __restrict restrict
+ # else
+@@ -385,8 +491,9 @@
+
+ /* ISO C99 also allows to declare arrays as non-overlapping. The syntax is
+ array_name[restrict]
+- GCC 3.1 supports this. */
+-#if __GNUC_PREREQ (3,1) && !defined __GNUG__
++ GCC 3.1 and clang support this.
++ This syntax is not usable in C++ mode. */
++#if (__GNUC_PREREQ (3,1) || __clang_major__ >= 3) && !defined __cplusplus
+ # define __restrict_arr __restrict
+ #else
+ # ifdef __GNUC__
+@@ -401,7 +508,7 @@
+ # endif
+ #endif
+
+-#if __GNUC__ >= 3
++#if (__GNUC__ >= 3) || __glibc_has_builtin (__builtin_expect)
+ # define __glibc_unlikely(cond) __builtin_expect ((cond), 0)
+ # define __glibc_likely(cond) __builtin_expect ((cond), 1)
+ #else
+@@ -409,15 +516,10 @@
+ # define __glibc_likely(cond) (cond)
+ #endif
+
+-#ifdef __has_attribute
+-# define __glibc_has_attribute(attr) __has_attribute (attr)
+-#else
+-# define __glibc_has_attribute(attr) 0
+-#endif
+-
+ #if (!defined _Noreturn \
+ && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+- && !__GNUC_PREREQ (4,7))
++ && !(__GNUC_PREREQ (4,7) \
++ || (3 < __clang_major__ + (5 <= __clang_minor__))))
+ # if __GNUC_PREREQ (2,8)
+ # define _Noreturn __attribute__ ((__noreturn__))
+ # else
+@@ -434,22 +536,63 @@
+ # define __attribute_nonstring__
+ #endif
+
++/* Undefine (also defined in libc-symbols.h). */
++#undef __attribute_copy__
++#if __GNUC_PREREQ (9, 0)
++/* Copies attributes from the declaration or type referenced by
++ the argument. */
++# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg)))
++#else
++# define __attribute_copy__(arg)
++#endif
++
+ #if (!defined _Static_assert && !defined __cplusplus \
+ && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+- && (!__GNUC_PREREQ (4, 6) || defined __STRICT_ANSI__))
++ && (!(__GNUC_PREREQ (4, 6) || __clang_major__ >= 4) \
++ || defined __STRICT_ANSI__))
+ # define _Static_assert(expr, diagnostic) \
+ extern int (*__Static_assert_function (void)) \
+ [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
+ #endif
+
+-/* The #ifndef lets Gnulib avoid including these on non-glibc
+- platforms, where the includes typically do not exist. */
+-#ifndef __WORDSIZE
++/* Gnulib avoids including these, as they don't work on non-glibc or
++ older glibc platforms. */
++#ifndef __GNULIB_CDEFS
+ # include <bits/wordsize.h>
+ # include <bits/long-double.h>
+ #endif
+
+-#if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
++#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
++# ifdef __REDIRECT
++
++/* Alias name defined automatically. */
++# define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
++# define __LDBL_REDIR_DECL(name) \
++ extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
++
++/* Alias name defined automatically, with leading underscores. */
++# define __LDBL_REDIR2_DECL(name) \
++ extern __typeof (__##name) __##name \
++ __asm (__ASMNAME ("__" #name "ieee128"));
++
++/* Alias name defined manually. */
++# define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
++# define __LDBL_REDIR1_DECL(name, alias) \
++ extern __typeof (name) name __asm (__ASMNAME (#alias));
++
++# define __LDBL_REDIR1_NTH(name, proto, alias) \
++ __REDIRECT_NTH (name, proto, alias)
++# define __REDIRECT_NTH_LDBL(name, proto, alias) \
++ __LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
++
++/* Unused. */
++# define __REDIRECT_LDBL(name, proto, alias) ... unused__redirect_ldbl
++# define __LDBL_REDIR_NTH(name, proto) ... unused__ldbl_redir_nth
++
++# else
++_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
++# endif
++#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+ # define __LDBL_COMPAT 1
+ # ifdef __REDIRECT
+ # define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
+@@ -458,6 +601,8 @@
+ # define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
+ # define __LDBL_REDIR_NTH(name, proto) \
+ __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
++# define __LDBL_REDIR2_DECL(name) \
++ extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
+ # define __LDBL_REDIR1_DECL(name, alias) \
+ extern __typeof (name) name __asm (__ASMNAME (#alias));
+ # define __LDBL_REDIR_DECL(name) \
+@@ -468,11 +613,13 @@
+ __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
+ # endif
+ #endif
+-#if !defined __LDBL_COMPAT || !defined __REDIRECT
++#if (!defined __LDBL_COMPAT && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0) \
++ || !defined __REDIRECT
+ # define __LDBL_REDIR1(name, proto, alias) name proto
+ # define __LDBL_REDIR(name, proto) name proto
+ # define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
+ # define __LDBL_REDIR_NTH(name, proto) name proto __THROW
++# define __LDBL_REDIR2_DECL(name)
+ # define __LDBL_REDIR_DECL(name)
+ # ifdef __REDIRECT
+ # define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
+@@ -503,7 +650,7 @@
+ check is required to enable the use of generic selection. */
+ #if !defined __cplusplus \
+ && (__GNUC_PREREQ (4, 9) \
+- || __glibc_clang_has_extension (c_generic_selections) \
++ || __glibc_has_extension (c_generic_selections) \
+ || (!defined __GNUC__ && defined __STDC_VERSION__ \
+ && __STDC_VERSION__ >= 201112L))
+ # define __HAVE_GENERIC_SELECTION 1
+@@ -511,4 +658,50 @@
+ # define __HAVE_GENERIC_SELECTION 0
+ #endif
+
++#if __GNUC_PREREQ (10, 0)
++/* Designates a 1-based positional argument ref-index of pointer type
++ that can be used to access size-index elements of the pointed-to
++ array according to access mode, or at least one element when
++ size-index is not provided:
++ access (access-mode, <ref-index> [, <size-index>]) */
++# define __attr_access(x) __attribute__ ((__access__ x))
++/* For _FORTIFY_SOURCE == 3 we use __builtin_dynamic_object_size, which may
++ use the access attribute to get object sizes from function definition
++ arguments, so we can't use them on functions we fortify. Drop the object
++ size hints for such functions. */
++# if __USE_FORTIFY_LEVEL == 3
++# define __fortified_attr_access(a, o, s) __attribute__ ((__access__ (a, o)))
++# else
++# define __fortified_attr_access(a, o, s) __attr_access ((a, o, s))
++# endif
++# if __GNUC_PREREQ (11, 0)
++# define __attr_access_none(argno) __attribute__ ((__access__ (__none__, argno)))
++# else
++# define __attr_access_none(argno)
++# endif
++#else
++# define __fortified_attr_access(a, o, s)
++# define __attr_access(x)
++# define __attr_access_none(argno)
++#endif
++
++#if __GNUC_PREREQ (11, 0)
++/* Designates dealloc as a function to call to deallocate objects
++ allocated by the declared function. */
++# define __attr_dealloc(dealloc, argno) \
++ __attribute__ ((__malloc__ (dealloc, argno)))
++# define __attr_dealloc_free __attr_dealloc (__builtin_free, 1)
++#else
++# define __attr_dealloc(dealloc, argno)
++# define __attr_dealloc_free
++#endif
++
++/* Specify that a function such as setjmp or vfork may return
++ twice. */
++#if __GNUC_PREREQ (4, 1)
++# define __attribute_returns_twice__ __attribute__ ((__returns_twice__))
++#else
++# define __attribute_returns_twice__ /* Ignore. */
++#endif
++
+ #endif /* sys/cdefs.h */
+diff --git gdb-10.2.orig/libiberty/aclocal.m4 gdb-10.2/libiberty/aclocal.m4
+index 34c0a5b..0e91b90 100644
+--- gdb-10.2.orig/libiberty/aclocal.m4
++++ gdb-10.2/libiberty/aclocal.m4
+@@ -16,6 +16,8 @@ AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works,
+ [AC_TRY_RUN([
+ /* Test by Jim Wilson and Kaveh Ghazi.
+ Check whether strncmp reads past the end of its string parameters. */
++#include <stdlib.h>
++#include <string.h>
+ #include <sys/types.h>
+
+ #ifdef HAVE_FCNTL_H
+@@ -43,7 +45,8 @@ AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works,
+
+ #define MAP_LEN 0x10000
+
+-main ()
++int
++main (void)
+ {
+ #if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
+ char *p;
+@@ -149,7 +152,10 @@ if test $ac_cv_os_cray = yes; then
+ fi
+
+ AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+-[AC_TRY_RUN([find_stack_direction ()
++[AC_TRY_RUN([#include <stdlib.h>
++
++int
++find_stack_direction (void)
+ {
+ static char *addr = 0;
+ auto char dummy;
+@@ -161,7 +167,9 @@ AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+ else
+ return (&dummy > addr) ? 1 : -1;
+ }
+-main ()
++
++int
++main (void)
+ {
+ exit (find_stack_direction() < 0);
+ }],
+diff --git gdb-10.2.orig/libiberty/configure gdb-10.2/libiberty/configure
+index ff93c9e..2b880a8 100755
+--- gdb-10.2.orig/libiberty/configure
++++ gdb-10.2/libiberty/configure
+@@ -6724,7 +6724,10 @@ else
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ /* end confdefs.h. */
+-find_stack_direction ()
++#include <stdlib.h>
++
++int
++find_stack_direction (void)
+ {
+ static char *addr = 0;
+ auto char dummy;
+@@ -6736,7 +6739,9 @@ find_stack_direction ()
+ else
+ return (&dummy > addr) ? 1 : -1;
+ }
+-main ()
++
++int
++main (void)
+ {
+ exit (find_stack_direction() < 0);
+ }
+@@ -7557,6 +7562,8 @@ else
+
+ /* Test by Jim Wilson and Kaveh Ghazi.
+ Check whether strncmp reads past the end of its string parameters. */
++#include <stdlib.h>
++#include <string.h>
+ #include <sys/types.h>
+
+ #ifdef HAVE_FCNTL_H
+@@ -7584,7 +7591,8 @@ else
+
+ #define MAP_LEN 0x10000
+
+-main ()
++int
++main (void)
+ {
+ #if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
+ char *p;
+diff --git gdb-10.2.orig/readline/readline/aclocal.m4 gdb-10.2/readline/readline/aclocal.m4
+index 1413267..7e7a303 100644
+--- gdb-10.2.orig/readline/readline/aclocal.m4
++++ gdb-10.2/readline/readline/aclocal.m4
+@@ -10,6 +10,7 @@ AC_DEFUN(BASH_C_LONG_LONG,
+ ac_cv_c_long_long=yes
+ else
+ AC_TRY_RUN([
++#include <stdlib.h>
+ int
+ main()
+ {
+@@ -33,6 +34,7 @@ AC_DEFUN(BASH_C_LONG_DOUBLE,
+ ac_cv_c_long_double=yes
+ else
+ AC_TRY_RUN([
++#include <stdlib.h>
+ int
+ main()
+ {
+@@ -134,6 +136,7 @@ typedef int (*_bashfunc)(const char *, ...);
+ #else
+ typedef int (*_bashfunc)();
+ #endif
++#include <stdlib.h>
+ main()
+ {
+ _bashfunc pf;
+@@ -191,6 +194,7 @@ AC_CACHE_VAL(bash_cv_under_sys_siglist,
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+ #ifndef UNDER_SYS_SIGLIST_DECLARED
+ extern char *_sys_siglist[];
+ #endif
+@@ -218,6 +222,7 @@ AC_CACHE_VAL(bash_cv_sys_siglist,
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+ #if !HAVE_DECL_SYS_SIGLIST
+ extern char *sys_siglist[];
+ #endif
+@@ -273,6 +278,7 @@ AC_CACHE_VAL(bash_cv_dup2_broken,
+ [AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <fcntl.h>
++#include <stdlib.h>
+ main()
+ {
+ int fd1, fd2, fl;
+@@ -335,6 +341,7 @@ AC_CACHE_VAL(bash_cv_opendir_not_robust,
+ # include <ndir.h>
+ # endif
+ #endif /* HAVE_DIRENT_H */
++#include <stdlib.h>
+ main()
+ {
+ DIR *dir;
+@@ -514,6 +521,7 @@ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/time.h>
+ #include <sys/resource.h>
++#include <stdlib.h>
+ main()
+ {
+ #ifdef HAVE_QUAD_T
+@@ -583,6 +591,7 @@ AC_CACHE_VAL(bash_cv_getenv_redef,
+ #ifdef HAVE_UNISTD_H
+ # include <unistd.h>
+ #endif
++#include <stdlib.h>
+ #ifndef __STDC__
+ # ifndef const
+ # define const
+@@ -786,6 +795,7 @@ AC_CACHE_VAL(bash_cv_func_sigsetjmp,
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <setjmp.h>
++#include <stdlib.h>
+
+ main()
+ {
+@@ -835,8 +845,9 @@ AC_CACHE_VAL(bash_cv_func_strcoll_broken,
+ #if defined (HAVE_LOCALE_H)
+ #include <locale.h>
+ #endif
++#include <stringh>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char *v[];
+ {
+@@ -863,7 +874,7 @@ char *v[];
+ /* Exit with 1 (failure) if these two values are both > 0, since
+ this tests whether strcoll(3) is broken with respect to strcmp(3)
+ in the default locale. */
+- exit (r1 > 0 && r2 > 0);
++ return r1 > 0 && r2 > 0;
+ }
+ ], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
+ [AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
+@@ -881,6 +892,7 @@ AC_CACHE_VAL(bash_cv_printf_a_format,
+ [AC_TRY_RUN([
+ #include <stdio.h>
+ #include <string.h>
++#include <stdlib.h>
+
+ int
+ main()
+@@ -1241,6 +1253,7 @@ AC_CACHE_VAL(bash_cv_pgrp_pipe,
+ #ifdef HAVE_UNISTD_H
+ # include <unistd.h>
+ #endif
++#include <stdlib.h>
+ main()
+ {
+ # ifdef GETPGRP_VOID
+@@ -1305,6 +1318,7 @@ AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+
+ typedef RETSIGTYPE sigfunc();
+
+@@ -1418,6 +1432,7 @@ AC_CACHE_VAL(bash_cv_sys_named_pipes,
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+
+ /* Add more tests in here as appropriate. */
+ main()
+@@ -1651,6 +1666,7 @@ AC_CACHE_VAL(bash_cv_unusable_rtsigs,
+ [AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <signal.h>
++#include <stdlib.h>
+
+ #ifndef NSIG
+ # define NSIG 64
+@@ -1770,7 +1786,7 @@ bash_cv_wcwidth_broken,
+ #include <locale.h>
+ #include <wchar.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char **v;
+ {
+@@ -1834,6 +1850,7 @@ AC_CACHE_VAL(ac_cv_rl_version,
+ [AC_TRY_RUN([
+ #include <stdio.h>
+ #include <readline/readline.h>
++#include <stdlib.h>
+
+ extern int rl_gnu_readline_p;
+
+@@ -1927,7 +1944,7 @@ AC_CACHE_VAL(bash_cv_func_ctype_nonascii,
+ #include <stdio.h>
+ #include <ctype.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char *v[];
+ {
+@@ -1948,7 +1965,7 @@ char *v[];
+ r1 = isprint(x);
+ x -= 128;
+ r2 = isprint(x);
+- exit (r1 == 0 || r2 == 0);
++ return r1 == 0 || r2 == 0;
+ }
+ ], bash_cv_func_ctype_nonascii=yes, bash_cv_func_ctype_nonascii=no,
+ [AC_MSG_WARN(cannot check ctype macros if cross compiling -- defaulting to no)
+@@ -4068,6 +4085,7 @@ AC_DEFUN([BASH_FUNC_SNPRINTF],
+ AC_CACHE_CHECK([for standard-conformant snprintf], [bash_cv_func_snprintf],
+ [AC_TRY_RUN([
+ #include <stdio.h>
++#include <stdlib.h>
+
+ main()
+ {
+@@ -4154,7 +4172,7 @@ AC_CACHE_VAL(bash_cv_wexitstatus_offset,
+
+ #include <sys/wait.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char **v;
+ {
+diff --git gdb-10.2.orig/readline/readline/configure gdb-10.2/readline/readline/configure
+index de7499e..a53a885 100755
+--- gdb-10.2.orig/readline/readline/configure
++++ gdb-10.2/readline/readline/configure
+@@ -1,5 +1,5 @@
+ #! /bin/sh
+-# From configure.ac for Readline 8.0, version 2.85.
++# From configure.ac for Readline 8.0, version 2.86.
+ # Guess values for system-dependent variables and create Makefiles.
+ # Generated by GNU Autoconf 2.69 for readline 8.0.
+ #
+@@ -5316,6 +5316,7 @@ else
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+
+ typedef RETSIGTYPE sigfunc();
+
+@@ -5346,7 +5347,7 @@ int s;
+ nsigint++;
+ }
+
+-main()
++int main(void)
+ {
+ nsigint = 0;
+ set_signal_handler(SIGINT, sigint);
+@@ -5396,8 +5397,9 @@ else
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <setjmp.h>
++#include <stdlib.h>
+
+-main()
++int main(void)
+ {
+ #if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
+ exit (1);
+@@ -5499,8 +5501,9 @@ else
+ #if defined (HAVE_LOCALE_H)
+ #include <locale.h>
+ #endif
++#include <string.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char *v[];
+ {
+@@ -5527,7 +5530,7 @@ char *v[];
+ /* Exit with 1 (failure) if these two values are both > 0, since
+ this tests whether strcoll(3) is broken with respect to strcmp(3)
+ in the default locale. */
+- exit (r1 > 0 && r2 > 0);
++ return r1 > 0 && r2 > 0;
+ }
+
+ _ACEOF
+@@ -5570,7 +5573,7 @@ else
+ #include <stdio.h>
+ #include <ctype.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char *v[];
+ {
+@@ -5591,7 +5594,7 @@ char *v[];
+ r1 = isprint(x);
+ x -= 128;
+ r2 = isprint(x);
+- exit (r1 == 0 || r2 == 0);
++ return r1 == 0 || r2 == 0;
+ }
+
+ _ACEOF
+@@ -6713,7 +6716,7 @@ else
+ #include <locale.h>
+ #include <wchar.h>
+
+-main(c, v)
++int main(c, v)
+ int c;
+ char **v;
+ {
+diff --git gdb-10.2.orig/readline/readline/configure.ac gdb-10.2/readline/readline/configure.ac
+index b9b3e1c..399920c 100644
+--- gdb-10.2.orig/readline/readline/configure.ac
++++ gdb-10.2/readline/readline/configure.ac
+@@ -5,7 +5,7 @@ dnl report bugs to chet(a)po.cwru.edu
+ dnl
+ dnl Process this file with autoconf to produce a configure script.
+
+-# Copyright (C) 1987-2018 Free Software Foundation, Inc.
++# Copyright (C) 1987-2019 Free Software Foundation, Inc.
+
+ # This program is free software: you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
+@@ -20,7 +20,7 @@ dnl Process this file with autoconf to produce a configure script.
+ # You should have received a copy of the GNU General Public License
+ # along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+-AC_REVISION([for Readline 8.0, version 2.85])
++AC_REVISION([for Readline 8.0, version 2.86])
+
+ m4_include([../../config/override.m4])
+
--
2.39.1
1 year, 6 months
