Shave a few cycles in string_agg().

Pavel Stehule

diff --git a/src/backend/utils/adt/varlena.c b/src/backend/utils/adt/varlena.c
index f1d582f4b24977fa31ea193d7073135073b472d8..95893386aae6ef4f06afbef3a2082dbd558dc254 100644 (file)
--- a/src/backend/utils/adt/varlena.c
+++ b/src/backend/utils/adt/varlena.c
@@ -3621,7 +3621,7 @@ string_agg_finalfn(PG_FUNCTION_ARGS)
    state = PG_ARGISNULL(0) ? NULL : (StringInfo) PG_GETARG_POINTER(0);
 
    if (state != NULL)
-       PG_RETURN_TEXT_P(cstring_to_text(state->data));
+       PG_RETURN_TEXT_P(cstring_to_text_with_len(state->data, state->len));
    else
        PG_RETURN_NULL();
 }