Check return value from snprintf(); ref #3498

e3922318 · Yukihiro "Matz" Matsumoto · f9ed15d8 · e3922318
Commit e3922318 authored Mar 11, 2017 by Yukihiro "Matz" Matsumoto
Hide whitespace changes
Inline Side-by-side

Showing with 3 additions and 0 deletions

mrbgems/mruby-sprintf/src/sprintf.c mrbgems/mruby-sprintf/src/sprintf.c +3 -0

No files found.
--- a/mrbgems/mruby-sprintf/src/sprintf.c
+++ b/mrbgems/mruby-sprintf/src/sprintf.c
@@ -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;