[CRIU] [PATCH] zdtm/s390x_regs_check: Fix compiler warning

[Adrian Reber]

On Mon, Sep 25, 2017 at 04:47:12PM +0200, Michael Holzheu wrote:
> When running 'make zdtm' on s390x it fails on RHEL7 with:
> 
>  make[3]: Leaving directory `/tmp/criu/test/zdtm/lib'
>   CC        s390x_regs_check.o
>  s390x_regs_check.c: In function "util_hexdump_grp":
>  s390x_regs_check.c:214:7: error: "ptr" may be used uninitialized
>  in this function [-Werror=maybe-uninitialized]
>     ptr += sprintf(ptr, "%02x", buf[i]);
> 
> Fix this and assign ptr from the beginning to help gcc.
> 
> Reported-by: Adrian Reber <adrian at lisas.de>
> Signed-off-by: Michael Holzheu <holzheu at linux.vnet.ibm.com>

Acked-by: Adrian Reber <areber at redhat.com>

> ---
>  test/zdtm/static/s390x_regs_check.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/test/zdtm/static/s390x_regs_check.c b/test/zdtm/static/s390x_regs_check.c
> index a92679ab0..1a7e84191 100644
> --- a/test/zdtm/static/s390x_regs_check.c
> +++ b/test/zdtm/static/s390x_regs_check.c
> @@ -198,8 +198,8 @@ struct reg_set *reg_set_vec[] = {
>  void util_hexdump_grp(const char *tag, const void *data, int grp,
>  		      int count, int indent)
>  {
> +	char str[1024], *ptr = str;
>  	const char *buf = data;
> -	char str[1024], *ptr;
>  	int i, first = 1;
>  
>  	for (i = 0; i < count; i++) {
> -- 
> 2.11.0