Subject: Re: tgetstr bug
To: None <email@example.com>
From: Christos Zoulas <firstname.lastname@example.org>
Date: 12/18/2006 06:07:37
In article <email@example.com>,
Valeriy E. Ushakov <firstname.lastname@example.org> wrote:
>Christos Zoulas <email@example.com> wrote:
>> In article <firstname.lastname@example.org>,
>> Bruno Haible <email@example.com> wrote:
>>>tgetstr ("md", NULL) crashes on NetBSD. It's here:
>>>t_getstr(struct tinfo *info, const char *id, char **area, size_t *limit)
>>> _DIAGASSERT(limit != NULL);
>>> *limit = i; <=====
>>> return NULL;
>>>Other systems support tgetstr ("md", NULL) without problems, and
>>>return the string in a statically allocated buffer.
>> The code that passes NULL is non-portable. According to the TOG:
>> The tgetstr() function gets the string entry for id. If area is
>> not a null pointer and does not point to a null pointer, tgetstr()
>> copies the string entry into the buffer pointed to by *area and
>> advances the variable pointed to by area to the first byte after
>> the copy of the string entry.
>> By making tgetstr(id, NULL) work, we are encouraging non-portable
>Hmm, why is that non-portable? I read TOG text as that tgetstr
>returns the capability *and*, if area is not null, also copies the
>capability string into the area.
>Do I miss something?
No, you read it differently than I did. Anyway, it is simple enough
to fix, and I can see that this interpretation of the text is valid.