[DTrace-devel] [PATCH] Initialize variable to eliminate compile-time warning

[Kris Van Hees]

There is only a compilation error there when you use an older compiler,
because it fails to recognize that the 4 cases in the switch are exactly
the only four cases that could ever happen in this code and thus rc is
guaranteed to always have a value.

On Fri, Apr 22, 2022 at 12:27:19PM -0400, eugene.loh--- via DTrace-devel wrote:
> From: Eugene Loh <eugene.loh at oracle.com>
> 
> Signed-off-by: Eugene Loh <eugene.loh at oracle.com>
> ---
>  libdtrace/dt_cc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/libdtrace/dt_cc.c b/libdtrace/dt_cc.c
> index b73789a2..c0556522 100644
> --- a/libdtrace/dt_cc.c
> +++ b/libdtrace/dt_cc.c
> @@ -2374,7 +2374,7 @@ dt_link_construct(dtrace_hdl_t *dtp, const dt_probe_t *prp, dtrace_difo_t *dp,
>  				ctf_file_t *cfp = dtp->dt_shared_ctf;
>  				ctf_id_t type = ctf_lookup_by_name(cfp, "struct task_struct");
>  				ctf_membinfo_t ctm;
> -				int rc;
> +				ctf_id_t rc = CTF_ERR;
>  
>  				if (type == CTF_ERR)
>  					return -1;
> -- 
> 2.18.4
> 
> 
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