Check return value from snprintf(); ref #3498

2026-06-08 16:11:16 +00:00 · 2017-03-11 15:18:41 +09:00
parent f9ed15d899
commit e3922318bd
1 changed files with 3 additions and 0 deletions
@@ -1087,6 +1087,9 @@ retry:

        CHECK(need);
        n = snprintf(&buf[blen], need, fbuf, fval);
+        if (n < 0) {
+          mrb_raise(mrb, E_RUNTIME_ERROR, "formatting error");
+        }
        blen += n;
      }
      break;