Re: (ITS#8018) a lot of warnings building with -Wall

[h.b.furuseth@usit.uio.no]

On 22/01/15 06:13, leo@yuriev.ru wrote:
> I unexpectedly detected that the variadic macro feature of C99 was
> already used in OpenLDAP 2.4 ;)

Look a bit closer:

> grep -R __VA_ARGS__ *
> build/ltmain.sh:# define DEBUG(format, ...) fprintf(stderr, format,
> __VA_ARGS__)
> contrib/ldapc++/ltmain.sh:# define DEBUG(format, ...) fprintf(stderr,
> format, __VA_ARGS__)

ltmain.sh is a shell/code library generated by GNU libtool.
Lots of stuff in there which we do not use.

> libraries/liblmdb/mdb.c:    fprintf(stderr, "%s:%d " fmt "\n",
> mdb_func_, __LINE__, __VA_ARGS__)
> servers/slapd/back-bdb/back-bdb.h:#define
>    BDB_LOG_PRINTF(env,txn,fmt,...)
>    (env)->log_printf((env),(txn),(fmt),__VA_ARGS__)
> servers/slapd/back-bdb/back-bdb.h:#define
>    BDB_LOG_PRINTF(env,txn,fmt,...)
>    __db_logmsg((env),(txn),"DIAGNOSTIC",0,(fmt),__VA_ARGS__)

Debug macros which are off by default and fall back to ((void)0)
or somesuch.