Re: [KJ] critical bug in strncpy() - solved

Re: [KJ] critical bug in strncpy() - solved

[walter harms]

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mea culpa,
for some odd reason i did not see "the dest will be padded with nulls."
i will send a fix for the documentation to the mainling list.

re,
walter


Matthew Wilcox wrote:
> There is no bug in lib/string.c's implementation of strncpy().
> Most people do not realise that strncpy is a stupid function that is
> almost impossible to use correctly.  Read the manpage:
> 
>        The strncpy() function is similar, except that not more than n bytes of
>        src  are copied. Thus, if there is no null byte among the first n bytes
>        of src, the result will not be null-terminated.
> 
>        In the case where the length of src is less than that of n, the remain-
>        der of dest will be padded with nulls.
> 
> This agrees with POSIX, ANSI C and Single Unix, fwiw.
> 

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