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maint: stzncpy: restrict pointer parameters

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* src/system.h (stzncpy): Add "restrict" attribute to each pointer
parameter and note in the comment that the buffers must not overlap.
This commit is contained in:
Jim Meyering 2012-07-21 12:08:31 +02:00
parent f24bf0448e
commit 7308099bbc
1 changed files with 4 additions and 3 deletions
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7
src/system.h
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@ -628,10 +628,11 @@ The following directory is part of the cycle:\n %s\n"), \
/* Like stpncpy, but do ensure that the result is NUL-terminated,
and do not NUL-pad out to LEN. I.e., when strnlen (src, len) == len,
this function writes a NUL byte into dest[len]. Thus, the destination
buffer must be at least LEN+1 bytes long. */
this function writes a NUL byte into dest[len]. Thus, the length
of the destination buffer must be at least LEN + 1.
The DEST and SRC buffers must not overlap. */
static inline char *
stzncpy (char *dest, char const *src, size_t len)
stzncpy (char *restrict dest, char const *restrict src, size_t len)
{
char const *src_end = src + len;
while (src < src_end && *src)