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Import new gnulib.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-04-11 21:12:46 +02:00
parent 93cd84df63
commit 053cfcddf1
255 changed files with 12578 additions and 4948 deletions
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22
grub-core/gnulib/xsize.h
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@ -1,6 +1,6 @@
/* xsize.h -- Checked size_t computations.
Copyright (C) 2003, 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright (C) 2003, 2008-2013 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
@ -13,8 +13,7 @@
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, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
along with this program; if not, see <http://www.gnu.org/licenses/>. */
#ifndef _XSIZE_H
#define _XSIZE_H
@ -28,6 +27,11 @@
# include <stdint.h>
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef XSIZE_INLINE
# define XSIZE_INLINE _GL_INLINE
#endif
/* The size of memory objects is often computed through expressions of
type size_t. Example:
void* p = malloc (header_size + n * element_size).
@ -49,7 +53,7 @@
((N) <= SIZE_MAX ? (size_t) (N) : SIZE_MAX)
/* Sum of two sizes, with overflow check. */
static inline size_t
XSIZE_INLINE size_t
#if __GNUC__ >= 3
__attribute__ ((__pure__))
#endif
@ -60,7 +64,7 @@ xsum (size_t size1, size_t size2)
}
/* Sum of three sizes, with overflow check. */
static inline size_t
XSIZE_INLINE size_t
#if __GNUC__ >= 3
__attribute__ ((__pure__))
#endif
@ -70,7 +74,7 @@ xsum3 (size_t size1, size_t size2, size_t size3)
}
/* Sum of four sizes, with overflow check. */
static inline size_t
XSIZE_INLINE size_t
#if __GNUC__ >= 3
__attribute__ ((__pure__))
#endif
@ -80,7 +84,7 @@ xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
}
/* Maximum of two sizes, with overflow check. */
static inline size_t
XSIZE_INLINE size_t
#if __GNUC__ >= 3
__attribute__ ((__pure__))
#endif
@ -93,7 +97,7 @@ xmax (size_t size1, size_t size2)
/* Multiplication of a count with an element size, with overflow check.
The count must be >= 0 and the element size must be > 0.
This is a macro, not an inline function, so that it works correctly even
This is a macro, not a function, so that it works correctly even
when N is of a wider type and N > SIZE_MAX. */
#define xtimes(N, ELSIZE) \
((N) <= SIZE_MAX / (ELSIZE) ? (size_t) (N) * (ELSIZE) : SIZE_MAX)
@ -105,4 +109,6 @@ xmax (size_t size1, size_t size2)
#define size_in_bounds_p(SIZE) \
((SIZE) != SIZE_MAX)
_GL_INLINE_HEADER_END
#endif /* _XSIZE_H */