On 2023/03/02 18:08, lijiang wrote:
> This looks good to me with the above modifications. So: Ack.
Thanks, but I found a build failure on a RHEL7 machine:
CC malloc/scratch_buffer_grow.o
In file included from ./libc-config.h:159:0,
from malloc/scratch_buffer_grow.c:20:
./cdefs.h:562:31: fatal error: bits/long-double.h: No such file or directory
# include <bits/long-double.h>
^
compilation terminated.
...
and found that the following gnulib patch fixes the above, so
I added the libc-config.h hunk to the attached.
https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=afeeb21058d1
Is this ok too? It's helpful if you could test again.
Thanks,
KazuFrom 400ee4df8ee90ee009647390d691117848f7769b Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@xxxxxxxxxx>
Date: Tue, 14 Feb 2023 08:06:39 +0100
Subject: [PATCH v3] Fix C99 compatibility issues in embedded copy of GDB
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.
Related GDB commits:
0075c53724f7 Impport libiberty commit: 885b6660c17f from gcc mainline.
b4f26d541aa7 Import GNU Readline 8.1
9c9d63b15ad5 gnulib: update to 776af40e0
3f3328b816ee Use startswith more for strncmp function calls.
Related glibc commit:
2337e04e21ba cdefs: Limit definition of fortification macros
Related gnulib commit:
afeeb21058d1 libc-config: fix include problem on older Debian
Signed-off-by: Florian Weimer <fweimer@xxxxxxxxxx>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@xxxxxxx>
---
gdb-10.2.patch | 1027 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 1027 insertions(+)
diff --git a/gdb-10.2.patch b/gdb-10.2.patch
index aa34743501ad..5089df9e72e1 100644
--- a/gdb-10.2.patch
+++ b/gdb-10.2.patch
@@ -2078,3 +2078,1030 @@ exit 0
return new_type;
}
+--- gdb-10.2/bfd/elf-bfd.h.orig
++++ 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
+--- gdb-10.2/gnulib/import/cdefs.h.orig
++++ 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 */
+--- gdb-10.2/gnulib/import/libc-config.h.orig
++++ gdb-10.2/gnulib/import/libc-config.h
+@@ -79,13 +79,9 @@
+ #ifndef _FEATURES_H
+ # define _FEATURES_H 1
+ #endif
+-/* Define __WORDSIZE so that <cdefs.h> does not attempt to include
+- nonexistent files. Make it a syntax error, since Gnulib does not
+- use __WORDSIZE now, and if Gnulib uses it later the syntax error
+- will let us know that __WORDSIZE needs configuring. */
+-#ifndef __WORDSIZE
+-# define __WORDSIZE %%%
+-#endif
++/* Define __GNULIB_CDEFS so that <cdefs.h> does not attempt to include
++ nonexistent files. */
++# define __GNULIB_CDEFS
+ /* Undef the macros unconditionally defined by our copy of glibc
+ <sys/cdefs.h>, so that they do not clash with any system-defined
+ versions. */
+--- gdb-10.2/libiberty/aclocal.m4.orig
++++ gdb-10.2/libiberty/aclocal.m4
+@@ -16,6 +16,8 @@ AC_CACHE_CHECK([for working strncmp], ac
+ [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
+
+ #define MAP_LEN 0x10000
+
+-main ()
++int
++main (void)
+ {
+ #if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
+ char *p;
+@@ -149,7 +152,10 @@ if test $ac_cv_os_cray = yes; then
+ fi
+
+ AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+-[AC_TRY_RUN([find_stack_direction ()
++[AC_TRY_RUN([#include <stdlib.h>
++
++int
++find_stack_direction (void)
+ {
+ static char *addr = 0;
+ auto char dummy;
+@@ -161,7 +167,9 @@ AC_CACHE_CHECK(stack direction for C all
+ else
+ return (&dummy > addr) ? 1 : -1;
+ }
+-main ()
++
++int
++main (void)
+ {
+ exit (find_stack_direction() < 0);
+ }],
+--- gdb-10.2/libiberty/configure.orig
++++ gdb-10.2/libiberty/configure
+@@ -6724,7 +6724,10 @@ else
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$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;
+--- gdb-10.2/readline/readline/aclocal.m4.orig
++++ 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 +136,8 @@ typedef int (*_bashfunc)(const char *, .
+ #else
+ typedef int (*_bashfunc)();
+ #endif
++#include <stdlib.h>
++int
+ main()
+ {
+ _bashfunc pf;
+@@ -191,9 +195,11 @@ 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
++int
+ main()
+ {
+ char *msg = (char *)_sys_siglist[2];
+@@ -218,9 +224,11 @@ 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
++int
+ main()
+ {
+ char *msg = sys_siglist[2];
+@@ -273,6 +281,8 @@ AC_CACHE_VAL(bash_cv_dup2_broken,
+ [AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <fcntl.h>
++#include <stdlib.h>
++int
+ main()
+ {
+ int fd1, fd2, fl;
+@@ -335,6 +345,8 @@ AC_CACHE_VAL(bash_cv_opendir_not_robust,
+ # include <ndir.h>
+ # endif
+ #endif /* HAVE_DIRENT_H */
++#include <stdlib.h>
++int
+ main()
+ {
+ DIR *dir;
+@@ -514,6 +526,8 @@ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/time.h>
+ #include <sys/resource.h>
++#include <stdlib.h>
++int
+ main()
+ {
+ #ifdef HAVE_QUAD_T
+@@ -583,6 +597,7 @@ AC_CACHE_VAL(bash_cv_getenv_redef,
+ #ifdef HAVE_UNISTD_H
+ # include <unistd.h>
+ #endif
++#include <stdlib.h>
+ #ifndef __STDC__
+ # ifndef const
+ # define const
+@@ -598,6 +613,7 @@ getenv (name)
+ {
+ return "42";
+ }
++int
+ main()
+ {
+ char *s;
+@@ -786,7 +802,9 @@ AC_CACHE_VAL(bash_cv_func_sigsetjmp,
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <setjmp.h>
++#include <stdlib.h>
+
++int
+ main()
+ {
+ #if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
+@@ -835,7 +853,10 @@ AC_CACHE_VAL(bash_cv_func_strcoll_broken
+ #if defined (HAVE_LOCALE_H)
+ #include <locale.h>
+ #endif
++#include <string.h>
++#include <stdlib.h>
+
++int
+ main(c, v)
+ int c;
+ char *v[];
+@@ -881,6 +902,7 @@ AC_CACHE_VAL(bash_cv_printf_a_format,
+ [AC_TRY_RUN([
+ #include <stdio.h>
+ #include <string.h>
++#include <stdlib.h>
+
+ int
+ main()
+@@ -1241,6 +1263,8 @@ AC_CACHE_VAL(bash_cv_pgrp_pipe,
+ #ifdef HAVE_UNISTD_H
+ # include <unistd.h>
+ #endif
++#include <stdlib.h>
++int
+ main()
+ {
+ # ifdef GETPGRP_VOID
+@@ -1305,6 +1329,7 @@ AC_CACHE_VAL(bash_cv_must_reinstall_sigh
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdlib.h>
+
+ typedef RETSIGTYPE sigfunc();
+
+@@ -1335,6 +1360,7 @@ int s;
+ nsigint++;
+ }
+
++int
+ main()
+ {
+ nsigint = 0;
+@@ -1418,8 +1444,11 @@ AC_CACHE_VAL(bash_cv_sys_named_pipes,
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
++#include <stdio.h>
++#include <stdlib.h>
+
+ /* Add more tests in here as appropriate. */
++int
+ main()
+ {
+ int fd, err;
+@@ -1651,11 +1680,13 @@ 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
+ #endif
+
++int
+ main ()
+ {
+ int n_sigs = 2 * NSIG;
+@@ -1770,6 +1801,7 @@ bash_cv_wcwidth_broken,
+ #include <locale.h>
+ #include <wchar.h>
+
++int
+ main(c, v)
+ int c;
+ char **v;
+@@ -1834,9 +1866,11 @@ 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;
+
++int
+ main()
+ {
+ FILE *fp;
+@@ -1926,7 +1960,9 @@ AC_CACHE_VAL(bash_cv_func_ctype_nonascii
+ #endif
+ #include <stdio.h>
+ #include <ctype.h>
++#include <stdlib.h>
+
++int
+ main(c, v)
+ int c;
+ char *v[];
+@@ -4068,7 +4104,9 @@ 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>
+
++int
+ main()
+ {
+ int n;
+@@ -4154,6 +4192,7 @@ AC_CACHE_VAL(bash_cv_wexitstatus_offset,
+
+ #include <sys/wait.h>
+
++int
+ main(c, v)
+ int c;
+ char **v;
+--- gdb-10.2/readline/readline/configure.orig
++++ 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 +5347,8 @@ int s;
+ nsigint++;
+ }
+
+-main()
++int
++main(void)
+ {
+ nsigint = 0;
+ set_signal_handler(SIGINT, sigint);
+@@ -5396,8 +5398,10 @@ 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);
+@@ -5499,7 +5503,10 @@ else
+ #if defined (HAVE_LOCALE_H)
+ #include <locale.h>
+ #endif
++#include <string.h>
++#include <stdlib.h>
+
++int
+ main(c, v)
+ int c;
+ char *v[];
+@@ -5569,7 +5576,9 @@ else
+ #endif
+ #include <stdio.h>
+ #include <ctype.h>
++#include <stdlib.h>
+
++int
+ main(c, v)
+ int c;
+ char *v[];
+@@ -6713,6 +6722,7 @@ else
+ #include <locale.h>
+ #include <wchar.h>
+
++int
+ main(c, v)
+ int c;
+ char **v;
+--- gdb-10.2/readline/readline/configure.ac.orig
++++ gdb-10.2/readline/readline/configure.ac
+@@ -5,7 +5,7 @@ dnl report bugs to chet@xxxxxxxxxxx
+ 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 p
+ # 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])
+
--
2.31.1
--
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