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-rw-r--r--tests/xalloc.h221
1 files changed, 86 insertions, 135 deletions
diff --git a/tests/xalloc.h b/tests/xalloc.h
index c419a2de..d189efa6 100644
--- a/tests/xalloc.h
+++ b/tests/xalloc.h
@@ -1,6 +1,6 @@
/* xalloc.h -- malloc with out-of-memory checking
- Copyright (C) 1990-2000, 2003-2004, 2006-2018 Free Software Foundation, Inc.
+ Copyright (C) 1990-2000, 2003-2004, 2006-2022 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
@@ -19,9 +19,13 @@
#define XALLOC_H_
#include <stddef.h>
+#include <stdlib.h>
#include <stdint.h>
-#include "xalloc-oversized.h"
+#if GNULIB_XALLOC
+# include "idx.h"
+# include "intprops.h"
+#endif
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
@@ -31,38 +35,72 @@ _GL_INLINE_HEADER_BEGIN
# define XALLOC_INLINE _GL_INLINE
#endif
+
#ifdef __cplusplus
extern "C" {
#endif
-#if ! defined __clang__ && \
- (__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_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
@@ -71,155 +109,60 @@ 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. 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;
- }
- if (xalloc_oversized (n, s))
- xalloc_die ();
- }
- else
- {
- /* Set N = floor (1.5 * N) + 1 so that progress is made even if N == 0.
- Check for overflow, so that N * S stays in both ptrdiff_t and
- size_t range. The check may be slightly conservative, but an
- exact check isn't worth the trouble. */
- if ((PTRDIFF_MAX < SIZE_MAX ? PTRDIFF_MAX : SIZE_MAX) / 3 * 2 / s
- <= n)
- xalloc_die ();
- n += n / 2 + 1;
- }
-
- *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
@@ -232,9 +175,16 @@ xrealloc (T *p, size_t 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 *
@@ -255,7 +205,8 @@ xmemdup (T const *p, size_t s)
return (T *) xmemdup ((void const *) p, s);
}
-#endif
+#endif /* GNULIB_XALLOC && C++ */
+
_GL_INLINE_HEADER_END