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New upstream version 2.3.4

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This commit is contained in:
Jan Wagner 2023-10-18 07:29:37 +00:00
parent e7bdd1c6c6
commit de72f6f588
556 changed files with 90432 additions and 53391 deletions
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231
gl/xalloc.h
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@ -1,10 +1,10 @@
/* xalloc.h -- malloc with out-of-memory checking
Copyright (C) 1990-2000, 2003-2004, 2006-2013 Free Software Foundation, Inc.
Copyright (C) 1990-2000, 2003-2004, 2006-2023 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
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -13,57 +13,92 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef XALLOC_H_
#define XALLOC_H_
#include <stddef.h>
#include <stdlib.h>
#include "xalloc-oversized.h"
#if GNULIB_XALLOC
# include "idx.h"
#endif
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef XALLOC_INLINE
# define XALLOC_INLINE _GL_INLINE
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if __GNUC__ >= 3
# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
#else
# define _GL_ATTRIBUTE_MALLOC
#endif
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
#else
# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
#endif
#if GNULIB_XALLOC_DIE
/* This function is always triggered when memory is exhausted.
It must be defined by the application, either explicitly
or by using gnulib's xalloc-die module. This is the
function to call when one wants the program to die because of a
memory allocation failure. */
extern _Noreturn void xalloc_die (void);
/*extern*/ _Noreturn void xalloc_die (void);
#endif /* GNULIB_XALLOC_DIE */
#if GNULIB_XALLOC
void *xmalloc (size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1));
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *ximalloc (idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xinmalloc (idx_t n, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xzalloc (size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1));
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xizalloc (idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xcalloc (size_t n, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2));
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xicalloc (idx_t n, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xrealloc (void *p, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2));
void *x2realloc (void *p, size_t *pn);
_GL_ATTRIBUTE_ALLOC_SIZE ((2));
void *xirealloc (void *p, idx_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xreallocarray (void *p, size_t n, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
void *xireallocarray (void *p, idx_t n, idx_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *x2realloc (void *p, size_t *ps) /* superseded by xpalloc */
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *x2nrealloc (void *p, size_t *pn, size_t s) /* superseded by xpalloc */
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *xpalloc (void *pa, idx_t *pn, idx_t n_incr_min, ptrdiff_t n_max, idx_t s)
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *xmemdup (void const *p, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((2));
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *ximemdup (void const *p, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
char *ximemdup0 (void const *p, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
char *xstrdup (char const *str)
_GL_ATTRIBUTE_MALLOC;
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
/* In the following macros, T must be an elementary or structure/union or
typedef'ed type, or a pointer to such a type. To apply one of the
@ -72,153 +107,60 @@ char *xstrdup (char const *str)
/* Allocate an object of type T dynamically, with error checking. */
/* extern t *XMALLOC (typename t); */
#define XMALLOC(t) ((t *) xmalloc (sizeof (t)))
# define XMALLOC(t) ((t *) xmalloc (sizeof (t)))
/* Allocate memory for N elements of type T, with error checking. */
/* extern t *XNMALLOC (size_t n, typename t); */
#define XNMALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xmalloc (n) : xnmalloc (n, sizeof (t))))
# define XNMALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xmalloc (n) : xnmalloc (n, sizeof (t))))
/* Allocate an object of type T dynamically, with error checking,
and zero it. */
/* extern t *XZALLOC (typename t); */
#define XZALLOC(t) ((t *) xzalloc (sizeof (t)))
# define XZALLOC(t) ((t *) xzalloc (sizeof (t)))
/* Allocate memory for N elements of type T, with error checking,
and zero it. */
/* extern t *XCALLOC (size_t n, typename t); */
#define XCALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
# define XCALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
/* Allocate an array of N objects, each with S bytes of memory,
dynamically, with error checking. S must be nonzero. */
XALLOC_INLINE void *xnmalloc (size_t n, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2));
XALLOC_INLINE void *
xnmalloc (size_t n, size_t s)
{
if (xalloc_oversized (n, s))
xalloc_die ();
return xmalloc (n * s);
}
void *xnmalloc (size_t n, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
/* FIXME: Deprecate this in favor of xreallocarray? */
/* Change the size of an allocated block of memory P to an array of N
objects each of S bytes, with error checking. S must be nonzero. */
XALLOC_INLINE void *xnrealloc (void *p, size_t n, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
XALLOC_INLINE void *
xnrealloc (void *p, size_t n, size_t s)
{
if (xalloc_oversized (n, s))
xalloc_die ();
return xrealloc (p, n * s);
}
/* If P is null, allocate a block of at least *PN such objects;
otherwise, reallocate P so that it contains more than *PN objects
each of S bytes. *PN must be nonzero unless P is null, and S must
be nonzero. Set *PN to the new number of objects, and return the
pointer to the new block. *PN is never set to zero, and the
returned pointer is never null.
Repeated reallocations are guaranteed to make progress, either by
allocating an initial block with a nonzero size, or by allocating a
larger block.
In the following implementation, nonzero sizes are increased by a
factor of approximately 1.5 so that repeated reallocations have
O(N) overall cost rather than O(N**2) cost, but the
specification for this function does not guarantee that rate.
Here is an example of use:
int *p = NULL;
size_t used = 0;
size_t allocated = 0;
void
append_int (int value)
{
if (used == allocated)
p = x2nrealloc (p, &allocated, sizeof *p);
p[used++] = value;
}
This causes x2nrealloc to allocate a block of some nonzero size the
first time it is called.
To have finer-grained control over the initial size, set *PN to a
nonzero value before calling this function with P == NULL. For
example:
int *p = NULL;
size_t used = 0;
size_t allocated = 0;
size_t allocated1 = 1000;
void
append_int (int value)
{
if (used == allocated)
{
p = x2nrealloc (p, &allocated1, sizeof *p);
allocated = allocated1;
}
p[used++] = value;
}
*/
XALLOC_INLINE void *
x2nrealloc (void *p, size_t *pn, size_t s)
{
size_t n = *pn;
if (! p)
{
if (! n)
{
/* The approximate size to use for initial small allocation
requests, when the invoking code specifies an old size of
zero. This is the largest "small" request for the GNU C
library malloc. */
enum { DEFAULT_MXFAST = 64 * sizeof (size_t) / 4 };
n = DEFAULT_MXFAST / s;
n += !n;
}
}
else
{
/* Set N = ceil (1.5 * N) so that progress is made if N == 1.
Check for overflow, so that N * S stays in size_t range.
The check is slightly conservative, but an exact check isn't
worth the trouble. */
if ((size_t) -1 / 3 * 2 / s <= n)
xalloc_die ();
n += (n + 1) / 2;
}
*pn = n;
return xrealloc (p, n * s);
return xreallocarray (p, n, s);
}
/* Return a pointer to a new buffer of N bytes. This is like xmalloc,
except it returns char *. */
XALLOC_INLINE char *xcharalloc (size_t n)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1));
XALLOC_INLINE char *
xcharalloc (size_t n)
{
return XNMALLOC (n, char);
}
char *xcharalloc (size_t n)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
#endif /* GNULIB_XALLOC */
#ifdef __cplusplus
}
#endif
#if GNULIB_XALLOC && defined __cplusplus
/* C++ does not allow conversions from void * to other pointer types
without a cast. Use templates to work around the problem when
@ -230,10 +172,17 @@ xrealloc (T *p, size_t s)
return (T *) xrealloc ((void *) p, s);
}
template <typename T> inline T *
xreallocarray (T *p, size_t n, size_t s)
{
return (T *) xreallocarray ((void *) p, n, s);
}
/* FIXME: Deprecate this in favor of xreallocarray? */
template <typename T> inline T *
xnrealloc (T *p, size_t n, size_t s)
{
return (T *) xnrealloc ((void *) p, n, s);
return xreallocarray (p, n, s);
}
template <typename T> inline T *
@ -254,7 +203,9 @@ xmemdup (T const *p, size_t s)
return (T *) xmemdup ((void const *) p, s);
}
#endif
#endif /* GNULIB_XALLOC && C++ */
_GL_INLINE_HEADER_END
#endif /* !XALLOC_H_ */