Hi,
> It worked fine prior to 2.25, since it's a change I thoight it may be nice to document that this set
> of arguments will segfault and has to be avoided by calling app itself.
Did it ever? Even much older versions have always accessed *save_ptr with a NULL input, so a crash
is guaranteed. And *s is also always accessed, so it had better never be NULL. Eg. this is what it did
back in 2007 ([1]):
if (s == NULL)
s = *save_ptr; // crash here
/* Scan leading delimiters. */
s += strspn (s, delim);
if (*s == '\0')
{
*save_ptr = s;
return NULL;
}
Cheers,
Wilco
[1] https://github.com/bminor/glibc/blob/0ecb606cb6cf65de1d9fc8a919bceb4be476c602/string/strtok_r.c
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