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I tried building gdb with G++ 4.7 and CXX="g++ -std=gnu+11", and that tripped on a build error: In file included from build-gnulib/import/stdio.h:53:0, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/common/common-defs.h:31, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/defs.h:28, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/armobsd-tdep.c:20: build-gnulib/import/stddef.h:104:3: error: conflicting declaration ‘typedef union max_align_t max_align_t’ In file included from build-gnulib/import/stddef.h:55:0, from build-gnulib/import/stdio.h:53, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/common/common-defs.h:31, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/defs.h:28, from /home/pedro/gdb/mygit/cxx-convertion/src/gdb/armobsd-tdep.c:20: /opt/gcc-4.7/lib/gcc/x86_64-unknown-linux-gnu/4.7.4/include/stddef.h:426:3: error: ‘max_align_t’ has a previous declaration as ‘typedef struct max_align_t max_align_t’ Updating gnulib to current master fixes it, since it brings in this fix: http://lists.gnu.org/archive/html/bug-gnulib/2016-04/msg00000.html Our last update was in August 2015. This doesn't bring in much added baggage, it's mostly bug fixes. It pulled in the "limits-h" module as automatic dependency, and given that looks potentially useful I added it to the set of modules we require. Tested on x86_64 Fedora 23, with g++ 4.7 and g++ 5.3, native and gdbserver. gdb/ChangeLog: 2016-10-18 Pedro Alves <palves@redhat.com> * gnulib/update-gnulib.sh (GNULIB_COMMIT_SHA1): Set to 2692e23a48e21f6daa029e8af9f1a143b7532f47. * gnulib/configure, gnulib/config.in, gnulib/aclocal.m4: Regenerate. * gnulib/import/Makefile: Update. * gnulib/import/alloca: Update. * gnulib/import/basename-lgpl: Update. * gnulib/import/canonicalize-lgpl: Update. * gnulib/import/config: Update. * gnulib/import/dirent: Update. * gnulib/import/dirfd: Update. * gnulib/import/dirname-lgpl: Update. * gnulib/import/dirname.h: Update. * gnulib/import/dosname.h: Update. * gnulib/import/errno: Update. * gnulib/import/extra/snippet/arg-nonnull.h: Update. * gnulib/import/extra/snippet/c++defs.h: Update. * gnulib/import/extra/snippet/warn-on-use.h: Update. * gnulib/import/extra/update-copyright: Update. * gnulib/import/flexmember.h: Update. * gnulib/import/float+.h: Update. * gnulib/import/float: Update. * gnulib/import/float: Update. * gnulib/import/fnmatch: Update. * gnulib/import/fnmatch: Update. * gnulib/import/fnmatch_loop: Update. * gnulib/import/fpucw.h: Update. * gnulib/import/frexp: Update. * gnulib/import/frexpl: Update. * gnulib/import/gettimeofday: Update. * gnulib/import/hard-locale: Update. * gnulib/import/hard-locale.h: Update. * gnulib/import/inttypes: Update. * gnulib/import/isnan: Update. * gnulib/import/isnand-nolibm.h: Update. * gnulib/import/isnand: Update. * gnulib/import/isnanl-nolibm.h: Update. * gnulib/import/isnanl: Update. * gnulib/import/itold: Update. * gnulib/import/limits: Update. * gnulib/import/localcharset: Update. * gnulib/import/localcharset.h: Update. * gnulib/import/lstat: Update. * gnulib/import/m4/00gnulib: Update. * gnulib/import/m4/absolute-header: Update. * gnulib/import/m4/alloca: Update. * gnulib/import/m4/canonicalize: Update. * gnulib/import/m4/codeset: Update. * gnulib/import/m4/configmake: Update. * gnulib/import/m4/dirent_h: Update. * gnulib/import/m4/dirfd: Update. * gnulib/import/m4/dirname: Update. * gnulib/import/m4/double-slash-root: Update. * gnulib/import/m4/eealloc: Update. * gnulib/import/m4/errno_h: Update. * gnulib/import/m4/exponentd: Update. * gnulib/import/m4/exponentl: Update. * gnulib/import/m4/extensions: Update. * gnulib/import/m4/extern-inline: Update. * gnulib/import/m4/fcntl-o: Update. * gnulib/import/m4/flexmember: Update. * gnulib/import/m4/float_h: Update. * gnulib/import/m4/fnmatch: Update. * gnulib/import/m4/fpieee: Update. * gnulib/import/m4/frexp: Update. * gnulib/import/m4/frexpl: Update. * gnulib/import/m4/gettimeofday: Update. * gnulib/import/m4/glibc21: Update. * gnulib/import/m4/gnulib-cache: Update. * gnulib/import/m4/gnulib-common: Update. * gnulib/import/m4/gnulib-comp: Update. * gnulib/import/m4/gnulib-tool: Update. * gnulib/import/m4/hard-locale: Update. * gnulib/import/m4/include_next: Update. * gnulib/import/m4/inttypes-pri: Update. * gnulib/import/m4/inttypes: Update. * gnulib/import/m4/isnand: Update. * gnulib/import/m4/isnanl: Update. * gnulib/import/m4/largefile: Update. * gnulib/import/m4/limits-h: Update. * gnulib/import/m4/localcharset: Update. * gnulib/import/m4/locale-fr: Update. * gnulib/import/m4/locale-ja: Update. * gnulib/import/m4/locale-zh: Update. * gnulib/import/m4/longlong: Update. * gnulib/import/m4/lstat: Update. * gnulib/import/m4/malloc: Update. * gnulib/import/m4/malloca: Update. * gnulib/import/m4/math_h: Update. * gnulib/import/m4/mbrtowc: Update. * gnulib/import/m4/mbsinit: Update. * gnulib/import/m4/mbsrtowcs: Update. * gnulib/import/m4/mbstate_t: Update. * gnulib/import/m4/memchr: Update. * gnulib/import/m4/memmem: Update. * gnulib/import/m4/mmap-anon: Update. * gnulib/import/m4/multiarch: Update. * gnulib/import/m4/nocrash: Update. * gnulib/import/m4/off_t: Update. * gnulib/import/m4/pathmax: Update. * gnulib/import/m4/rawmemchr: Update. * gnulib/import/m4/readlink: Update. * gnulib/import/m4/rename: Update. * gnulib/import/m4/rmdir: Update. * gnulib/import/m4/signal_h: Update. * gnulib/import/m4/ssize_t: Update. * gnulib/import/m4/stat: Update. * gnulib/import/m4/stdbool: Update. * gnulib/import/m4/stddef_h: Update. * gnulib/import/m4/stdint: Update. * gnulib/import/m4/stdio_h: Update. * gnulib/import/m4/stdlib_h: Update. * gnulib/import/m4/strchrnul: Update. * gnulib/import/m4/string_h: Update. * gnulib/import/m4/strstr: Update. * gnulib/import/m4/strtok_r: Update. * gnulib/import/m4/sys_socket_h: Update. * gnulib/import/m4/sys_stat_h: Update. * gnulib/import/m4/sys_time_h: Update. * gnulib/import/m4/sys_types_h: Update. * gnulib/import/m4/time_h: Update. * gnulib/import/m4/unistd_h: Update. * gnulib/import/m4/warn-on-use: Update. * gnulib/import/m4/wchar_h: Update. * gnulib/import/m4/wchar_t: Update. * gnulib/import/m4/wctype_h: Update. * gnulib/import/m4/wint_t: Update. * gnulib/import/malloc: Update. * gnulib/import/malloca: Update. * gnulib/import/malloca.h: Update. * gnulib/import/math: Update. * gnulib/import/math: Update. * gnulib/import/mbrtowc: Update. * gnulib/import/mbsinit: Update. * gnulib/import/mbsrtowcs-impl.h: Update. * gnulib/import/mbsrtowcs-state: Update. * gnulib/import/mbsrtowcs: Update. * gnulib/import/memchr: Update. * gnulib/import/memmem: Update. * gnulib/import/pathmax.h: Update. * gnulib/import/rawmemchr: Update. * gnulib/import/readlink: Update. * gnulib/import/ref-add.sin: Update. * gnulib/import/ref-del.sin: Update. * gnulib/import/rename: Update. * gnulib/import/rmdir: Update. * gnulib/import/same-inode.h: Update. * gnulib/import/signal: Update. * gnulib/import/stat: Update. * gnulib/import/stdbool: Update. * gnulib/import/stddef: Update. * gnulib/import/stdint: Update. * gnulib/import/stdio: Update. * gnulib/import/stdlib: Update. * gnulib/import/str-two-way.h: Update. * gnulib/import/strchrnul: Update. * gnulib/import/streq.h: Update. * gnulib/import/string: Update. * gnulib/import/stripslash: Update. * gnulib/import/strnlen1: Update. * gnulib/import/strnlen1.h: Update. * gnulib/import/strstr: Update. * gnulib/import/strtok_r: Update. * gnulib/import/sys_stat: Update. * gnulib/import/sys_time: Update. * gnulib/import/sys_types: Update. * gnulib/import/time: Update. * gnulib/import/unistd: Update. * gnulib/import/unistd: Update. * gnulib/import/verify.h: Update. * gnulib/import/wchar: Update. * gnulib/import/wctype: Update. * gnulib/import/flexmember.h: New file. * gnulib/import/hard-locale.c: New file. * gnulib/import/hard-locale.h: New file. * gnulib/import/limits.in.h: New file. * gnulib/import/m4/flexmember.m4: New file. * gnulib/import/m4/hard-locale.m4: New file. * gnulib/import/m4/limits-h.m4: New file.
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* Memory allocation on the stack.
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Copyright (C) 1995, 1999, 2001-2004, 2006-2016 Free Software Foundation,
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Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this program; if not, see
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<http://www.gnu.org/licenses/>.
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*/
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/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
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means there is a real alloca function. */
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#ifndef _GL_ALLOCA_H
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#define _GL_ALLOCA_H
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/* alloca (N) returns a pointer to N bytes of memory
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allocated on the stack, which will last until the function returns.
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Use of alloca should be avoided:
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- inside arguments of function calls - undefined behaviour,
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- in inline functions - the allocation may actually last until the
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calling function returns,
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- for huge N (say, N >= 65536) - you never know how large (or small)
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the stack is, and when the stack cannot fulfill the memory allocation
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request, the program just crashes.
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*/
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#ifndef alloca
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# ifdef __GNUC__
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# define alloca __builtin_alloca
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# elif defined _AIX
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# define alloca __alloca
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# elif defined _MSC_VER
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# include <malloc.h>
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# define alloca _alloca
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# elif defined __DECC && defined __VMS
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# define alloca __ALLOCA
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# elif defined __TANDEM && defined _TNS_E_TARGET
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# ifdef __cplusplus
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extern "C"
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# endif
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void *_alloca (unsigned short);
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# pragma intrinsic (_alloca)
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# define alloca _alloca
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# elif defined __MVS__
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# include <stdlib.h>
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# else
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C"
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# endif
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void *alloca (size_t);
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# endif
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#endif
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#endif /* _GL_ALLOCA_H */
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