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Modify obstack.[hc] to avoid having to include other gnulib files

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Using the standard gnulib obstack source requires importing quite a
lot of other files from gnulib, and requires build changes.

include/
	PR gdb/17133
	* obstack.h (__attribute_pure__): Expand _GL_ATTRIBUTE_PURE.
libiberty/
	PR gdb/17133
	* obstack.c (__alignof__): Expand alignof_type from alignof.h.
	(obstack_exit_failure): Don't use exitfail.h.
	(_): Include libintl.h when HAVE_LIBINTL_H and nls enabled.
	Provide default.  Don't include gettext.h.
	(_Noreturn): Define.
	* obstacks.texi: Adjust node references to external libc info files.
This commit is contained in:
Alan Modra 2015-11-09 15:13:51 +10:30
parent 314dee8ea9
commit e9f40d7d68
5 changed files with 55 additions and 14 deletions
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5
include/ChangeLog
View file

@ -1,3 +1,8 @@
2015-11-09 Alan Modra <amodra@gmail.com>
PR gdb/17133
* obstack.h (__attribute_pure__): Expand _GL_ATTRIBUTE_PURE.
2015-11-09 Alan Modra <amodra@gmail.com>
PR gdb/17133

6
include/obstack.h
View file

@ -142,7 +142,11 @@
P, A)
#ifndef __attribute_pure__
# define __attribute_pure__ _GL_ATTRIBUTE_PURE
# if defined __GNUC_MINOR__ && __GNUC__ * 1000 + __GNUC_MINOR__ >= 2096
# define __attribute_pure__ __attribute__ ((__pure__))
# else
# define __attribute_pure__
# endif
#endif
#ifdef __cplusplus

10
libiberty/ChangeLog
View file

@ -1,3 +1,13 @@
2015-11-09 Alan Modra <amodra@gmail.com>
PR gdb/17133
* obstack.c (__alignof__): Expand alignof_type from alignof.h.
(obstack_exit_failure): Don't use exitfail.h.
(_): Include libintl.h when HAVE_LIBINTL_H and nls enabled.
Provide default. Don't include gettext.h.
(_Noreturn): Define.
* obstacks.texi: Adjust node references to external libc info files.
2015-11-09 Alan Modra <amodra@gmail.com>
PR gdb/17133

40
libiberty/obstack.c
View file

@ -51,9 +51,14 @@
/* If GCC, or if an oddball (testing?) host that #defines __alignof__,
use the already-supplied __alignof__. Otherwise, this must be Gnulib
(as glibc assumes GCC); defer to Gnulib's alignof_type. */
# if !defined __GNUC__ && !defined __alignof__
# include <alignof.h>
# define __alignof__(type) alignof_type (type)
# if !defined __GNUC__ && !defined __IBM__ALIGNOF__ && !defined __alignof__
# if defined __cplusplus
template <class type> struct alignof_helper { char __slot1; type __slot2; };
# define __alignof__(type) offsetof (alignof_helper<type>, __slot2)
# else
# define __alignof__(type) \
offsetof (struct { char __slot1; type __slot2; }, __slot2)
# endif
# endif
# include <stdlib.h>
# include <stdint.h>
@ -309,17 +314,34 @@ _obstack_memory_used (struct obstack *h)
# ifdef _LIBC
int obstack_exit_failure = EXIT_FAILURE;
# else
# include "exitfail.h"
# define obstack_exit_failure exit_failure
# ifndef EXIT_FAILURE
# define EXIT_FAILURE 1
# endif
# define obstack_exit_failure EXIT_FAILURE
# endif
# ifdef _LIBC
# if defined _LIBC || (HAVE_LIBINTL_H && ENABLE_NLS)
# include <libintl.h>
# ifndef _
# define _(msgid) gettext (msgid)
# endif
# else
# include "gettext.h"
# ifndef _
# define _(msgid) (msgid)
# endif
# endif
# ifndef _
# define _(msgid) gettext (msgid)
# if !(defined _Noreturn \
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112))
# if ((defined __GNUC__ \
&& (__GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))) \
|| (defined __SUNPRO_C && __SUNPRO_C >= 0x5110))
# define _Noreturn __attribute__ ((__noreturn__))
# elif defined _MSC_VER && _MSC_VER >= 1200
# define _Noreturn __declspec (noreturn)
# else
# define _Noreturn
# endif
# endif
# ifdef _LIBC

8
libiberty/obstacks.texi
View file

@ -93,7 +93,7 @@ them are freed. These macros should appear before any use of obstacks
in the source file.
Usually these are defined to use @code{malloc} via the intermediary
@code{xmalloc} (@pxref{Unconstrained Allocation}). This is done with
@code{xmalloc} (@pxref{Unconstrained Allocation, , , libc, The GNU C Library Reference Manual}). This is done with
the following pair of macro definitions:
@smallexample
@ -172,8 +172,8 @@ The value of this variable is a pointer to a function that
@code{obstack} uses when @code{obstack_chunk_alloc} fails to allocate
memory. The default action is to print a message and abort.
You should supply a function that either calls @code{exit}
(@pxref{Program Termination}) or @code{longjmp} (@pxref{Non-Local
Exits}) and doesn't return.
(@pxref{Program Termination, , , libc, The GNU C Library Reference Manual}) or @code{longjmp} (@pxref{Non-Local
Exits, , , libc, The GNU C Library Reference Manual}) and doesn't return.
@smallexample
void my_obstack_alloc_failed (void)
@ -253,7 +253,7 @@ obstack_savestring (char *addr, size_t size)
@noindent
Contrast this with the previous example of @code{savestring} using
@code{malloc} (@pxref{Basic Allocation}).
@code{malloc} (@pxref{Basic Allocation, , , libc, The GNU C Library Reference Manual}).
@node Freeing Obstack Objects
@subsubsection Freeing Objects in an Obstack