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Update some coments.

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This commit is contained in:
Gregory Nutt 2017-03-08 14:28:59 -06:00
parent ab2337fa4b
commit ba117284c2
1 changed files with 14 additions and 1 deletions
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15
libc/string/lib_strerrorr.c
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@ -49,6 +49,19 @@
/****************************************************************************
* Name: strerror_r
*
* Description:
* The strerror_r() function is similar to strerror(), but is thread safe.
* It returns the error string in the user-supplied buffer 'buf' of length
* 'buflen'.
*
* Returned Value:
* strerror_r() returns 0 on success. On error, a (positive) error number is
* returned.
*
* Portability:
* Specified in POSIX.1-2001
*
****************************************************************************/
int strerror_r(int errnum, FAR char *buf, size_t buflen)
@ -56,6 +69,6 @@ int strerror_r(int errnum, FAR char *buf, size_t buflen)
FAR const char *errstr = strerror(errnum);
DEBUGASSERT(buf != NULL);
strncpy(buf, errstr, buflen);
(void)strncpy(buf, errstr, buflen);
return OK;
}