[LTP] [PATCH] lib: fix offset in tst_resm_hexd

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> Commit f72ca5b9c484 "lib: add tst_res_hexd for newlib"
> broke tst_resm_hexd when I moved "offset = strlen(tmesg)"
> before macro that expands varargs.
> 
> Fix it by moving offset initialisation after EXPAND_VAR_ARGS.
> 
> Signed-off-by: Jan Stancek <jstancek@redhat.com>
> ---
>  lib/tst_res.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/tst_res.c b/lib/tst_res.c
> index 261dec0fbba8..61daaeb4944e 100644
> --- a/lib/tst_res.c
> +++ b/lib/tst_res.c
> @@ -509,7 +509,7 @@ void tst_resm_hexd_(const char *file, const int lineno, int ttype,
>  	char tmesg[USERMESG];
>  	static const size_t symb_num	= 2; /* xx */
>  	static const size_t size_max	= 16;
> -	size_t offset = strlen(tmesg);
> +	size_t offset;
>  	size_t i;
>  	char *pmesg = tmesg;
>  	tst_res_func_t res_func;
> @@ -520,6 +520,7 @@ void tst_resm_hexd_(const char *file, const int lineno, int ttype,
>  		res_func = tst_res__;
>  
>  	EXPAND_VAR_ARGS(tmesg, arg_fmt, USERMESG);
> +	offset = strlen(tmesg);
>  
>  	if (size > size_max || size == 0 ||
>  		(offset + size * (symb_num + 1)) >= USERMESG)

Good catch. Thanks for fixing this, acked.

-- 
Cyril Hrubis
chrubis@suse.cz