Daniel Stenberg wrote:
>
> On Thu, 17 Aug 2000, Fred Noz wrote:
>
> > I am finding this bug when running on HP-UX 10.20 and HP-UX 11 (works
> > OK on Linux) using latest curl (Aug. 16, 2000) (OK on 6.5.2):
> > On a system where DNS is used for host name resolution, the command
> > line:
> > curl http://xx.yy.zz.com/
> > results in the error message:
> > curl: (6) Couldn't resolv host 'xx.yy.zz.com'
>

> The name resolving is changed in curl 7 to use the gethostbyname_r()
> function, as opposed to the gethostbyname() in curl 6. One major problem I
> have with gethostbyname_r() is that there exists at least three different
> ways to use it, depending on what platform you use.
>
> The configure script detects gethostbyname_r() and tries to determine how
> many arguments *your* version of gethostbyname_r() should have.
>
> Could you please check how many arguments it thinks your gethostbyname_r()
> should get?
>
> Then, would you be capable of single-stepping the GetHost() function to see
> when it fails or try some alternatives until it works?

HP-UX 10.20:
The configure script thinks gethostbyname_r() function takes 5 args
when it really takes 3. It thinks gethostbyaddr_r() takes 7 args when
it takes 5. After I ran configure, I edited config.cache and changed:
< ac_cv_gethostbyaddr_args=${ac_cv_gethostbyaddr_args=7}
< ac_cv_gethostbyname_args=${ac_cv_gethostbyname_args=5}

---
> ac_cv_gethostbyaddr_args=${ac_cv_gethostbyaddr_args=5}
> ac_cv_gethostbyname_args=${ac_cv_gethostbyname_args=3}
Then I ran configure again.  config.h now shows the correct number 
of args.
I ran make and had a few compile errors in lib/hostip.c and lib/ftp.c.
I will send the corrected files to you separately.
In lib/hostip.c:  Added #define _REENTRANT
Changed *h_errnop= errno; to h_errnop= errno;  (both are int).
Commented out #include "inet_ntoa_r.h"  (This caused a type conflict.)
In lib/ftp.c:  Unbalanced parentheses.
Now curl compiles correctly.  Unfortunately, I still get the same
error (Couldn't resolv host).
HP-UX 11:
I compiled natively on HP-UX 11 and curl works perfectly (without
any code changes).
This version does not have gethostbyname_r() or gethostbyaddr_r().
gethostbyname() and gethostbyaddr() are both reentrant and have 
standard syntax.  Perhaps curl does not take advantage of their 
reentrancy.  I don't know.  The configure script correctly states
that gethostbyname_r() and gethostbyaddr_r() are not present.
I don't have much more time to debug curl on HP-UX 10.20.  I would be
glad to compile and execute a quick test if you would like.
	- Fred Noz