write_sensu: fix format-string portability problem

Casting counters, derives and abolutes to int64_t was incorrect, as they
are respectively `unsigned long long`, `int64_t` and `uint64_t`.
Apart from potentially loosing precision, the `%ld` format-string made
clang choke on the 32bit architecture (follow-up to 78340212).

diff --git a/src/write_sensu.c b/src/write_sensu.c
index 35db4f7..cb0c2fe 100644 (file)
--- a/src/write_sensu.c
+++ b/src/write_sensu.c
@@ -484,18 +484,29 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                        return NULL;
                }
        } else {
-               int64_t tmp_v;
-               if (ds->ds[index].type == DS_TYPE_DERIVE)
-                       tmp_v = (int64_t) vl->values[index].derive;
-               else if (ds->ds[index].type == DS_TYPE_ABSOLUTE)
-                       tmp_v = (int64_t) vl->values[index].absolute;
-               else
-                       tmp_v = (int64_t) vl->values[index].counter;
-               res = asprintf(&value_str, "%ld", tmp_v);
-               if (res == -1) {
-                       free(ret_str);
-                       ERROR("write_sensu plugin: Unable to alloc memory");
-                       return NULL;
+               if (ds->ds[index].type == DS_TYPE_DERIVE) {
+                       res = asprintf(&value_str, "%"PRIi64, vl->values[index].derive);
+                       if (res == -1) {
+                               free(ret_str);
+                               ERROR("write_sensu plugin: Unable to alloc memory");
+                               return NULL;
+                       }
+               }
+               else if (ds->ds[index].type == DS_TYPE_ABSOLUTE) {
+                       res = asprintf(&value_str, "%"PRIu64, vl->values[index].absolute);
+                       if (res == -1) {
+                               free(ret_str);
+                               ERROR("write_sensu plugin: Unable to alloc memory");
+                               return NULL;
+                       }
+               }
+               else {
+                       res = asprintf(&value_str, "%llu", vl->values[index].counter);
+                       if (res == -1) {
+                               free(ret_str);
+                               ERROR("write_sensu plugin: Unable to alloc memory");
+                               return NULL;
+                       }
                }
        }