# include <stddef.h>
+# include "xalloc-oversized.h"
# ifdef __cplusplus
extern "C" {
# endif
-# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
-# define _GL_ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
-# else
-# define _GL_ATTRIBUTE_NORETURN /* empty */
-# endif
-
# if __GNUC__ >= 3
# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
# else
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 void xalloc_die (void) _GL_ATTRIBUTE_NORETURN;
+extern _Noreturn void xalloc_die (void);
void *xmalloc (size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1));
char *xstrdup (char const *str)
_GL_ATTRIBUTE_MALLOC;
-/* Return 1 if an array of N objects, each of size S, cannot exist due
- to size arithmetic overflow. S must be positive and N must be
- nonnegative. This is a macro, not an inline function, so that it
- works correctly even when SIZE_MAX < N.
-
- By gnulib convention, SIZE_MAX represents overflow in size
- calculations, so the conservative dividend to use here is
- SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value.
- However, malloc (SIZE_MAX) fails on all known hosts where
- sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for
- exactly-SIZE_MAX allocations on such hosts; this avoids a test and
- branch when S is known to be 1. */
-# define xalloc_oversized(n, s) \
- ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n))
-
-
/* 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
following macros to a function pointer or array type, you need to typedef
{
/* The approximate size to use for initial small allocation
requests, when the invoking code specifies an old size of
- zero. 64 bytes is the largest "small" request for the
- GNU C library malloc. */
- enum { DEFAULT_MXFAST = 64 };
+ 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;