Convert instances of tor_malloc+tor_snprintf into tor_asprintf

These were found by looking for tor_snprintf() instances that were
preceeded closely by tor_malloc(), though I probably converted some
more snprintfs as well.

(In every case, make sure that the length variable (if any) is
removed, renamed, or lowered, so that anything else that might have
assumed a longer buffer doesn't exist.)

1 files changed, 2 insertions, 8 deletions

diff --git a/src/or/policies.c b/src/or/policies.c
index 34cb64bd81..53cdf48403 100644
--- a/src/or/policies.c
+++ b/src/or/policies.c
@@ -1218,7 +1218,7 @@ policy_summarize(smartlist_t *policy)
   smartlist_t *summary = policy_summary_create();
   smartlist_t *accepts, *rejects;
   int i, last, start_prt;
-  size_t accepts_len, rejects_len, shorter_len, final_size;
+  size_t accepts_len, rejects_len;
   char *accepts_str = NULL, *rejects_str = NULL, *shorter_str, *result;
   const char *prefix;
 
@@ -1290,21 +1290,15 @@ policy_summarize(smartlist_t *policy)
     tor_assert(*c == ',');
     *c = '\0';
 
-    shorter_len = strlen(shorter_str);
   } else if (rejects_len < accepts_len) {
     shorter_str = rejects_str;
-    shorter_len = rejects_len;
     prefix = "reject";
   } else {
     shorter_str = accepts_str;
-    shorter_len = accepts_len;
     prefix = "accept";
   }
 
-  final_size = strlen(prefix)+1+shorter_len+1;
-  tor_assert(final_size <= MAX_EXITPOLICY_SUMMARY_LEN+1);
-  result = tor_malloc(final_size);
-  tor_snprintf(result, final_size, "%s %s", prefix, shorter_str);
+  tor_asprintf(&result, "%s %s", prefix, shorter_str);
 
  cleanup:
   /* cleanup */