[DTrace-devel] [PATCH 2/3] usdt parser: handle encoded hyphens

[Eugene Loh]

I would expect a patch like this to have a test to checks the behavior.

On 6/24/25 17:40, Kris Van Hees via DTrace-devel wrote:
> Signed-off-by: Kris Van Hees <kris.van.hees at oracle.com>
> ---
>   libcommon/usdt_parser_notes.c | 17 +++++++++++++++++
>   1 file changed, 17 insertions(+)
>
> diff --git a/libcommon/usdt_parser_notes.c b/libcommon/usdt_parser_notes.c
> index fb57f119..d3d744fb 100644
> --- a/libcommon/usdt_parser_notes.c
> +++ b/libcommon/usdt_parser_notes.c
> @@ -471,6 +471,23 @@ parse_usdt_note(int out, dof_helper_t *dhp, usdt_data_t *data,
>   	}
>   	prbt.off = off;
>   
> +	/*
> +	 * If the probe name has encoded hyphens, perform in-place changing
> +	 * from "__" into "-".
> +	 */
> +	if (strstr(prbt.prb, "__") != NULL) {
> +		char		*q;
> +		const char	*s = prbt.prb, *e = p;
> +
> +		for (q = (char *)s; s < e; s++, q++) {
> +			if (s[0] == '_' && s[1] == '_') {
> +				*q = '-';
> +				s++;
> +			} else if (s > q)
> +				*q = *s;
> +		}
> +	}
> +
>   	if ((prp = dt_htab_lookup(prbmap, &prbt)) == NULL) {
>   		if ((prp = malloc(sizeof(dt_probe_t))) == NULL) {
>   			usdt_error(out, ENOMEM, "Failed to allocate probe");