Re: [Qemu-devel] [PATCH 2/4] ui: avoid 'local_err' variable shadowing in VNC SASL auth

[Laszlo Ersek <lersek@redhat.com>]

On 02/05/18 12:49, Daniel P. Berrangé wrote:
> The start_auth_sasl() method declares a 'Error *local_err' variable in
> an inner if () {...} scope, which shadows a variable of the same name
> declared at the start of the method. This is confusing for reviewers and
> may trigger compiler warnings.
> 
> Reported-by: Laszlo Ersek <lersek@redhat.com>
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> ---
>  ui/vnc-auth-sasl.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/ui/vnc-auth-sasl.c b/ui/vnc-auth-sasl.c
> index fbccca8c8a..8ebd0d3d00 100644
> --- a/ui/vnc-auth-sasl.c
> +++ b/ui/vnc-auth-sasl.c
> @@ -556,7 +556,6 @@ void start_auth_sasl(VncState *vs)
>      /* Inform SASL that we've got an external SSF layer from TLS/x509 */
>      if (vs->auth == VNC_AUTH_VENCRYPT &&
>          vs->subauth == VNC_AUTH_VENCRYPT_X509SASL) {
> -        Error *local_err = NULL;
>          int keysize;
>          sasl_ssf_t ssf;
>  
> @@ -565,7 +564,6 @@ void start_auth_sasl(VncState *vs)
>          if (keysize < 0) {
>              trace_vnc_auth_fail(vs, vs->auth, "cannot TLS get cipher size",
>                                  error_get_pretty(local_err));
> -            error_free(local_err);
>              sasl_dispose(&vs->sasl.conn);
>              vs->sasl.conn = NULL;
>              goto authabort;
> 

Reviewed-by: Laszlo Ersek <lersek@redhat.com>