diff options
| -rw-r--r-- | mrbgems/mruby-io/src/io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c index 57f4025d6..3d9d2b48a 100644 --- a/mrbgems/mruby-io/src/io.c +++ b/mrbgems/mruby-io/src/io.c @@ -1493,7 +1493,7 @@ mrb_io_readchar(mrb_state *mrb, mrb_value self) #endif mrb_get_args(mrb, "S", &buf); - mrb_assert(RSTRING_PTR(buf) > 0); + mrb_assert(RSTRING_PTR(buf) != NULL); mrb_str_modify(mrb, RSTRING(buf)); #ifdef MRB_UTF8_STRING c = RSTRING_PTR(buf)[0]; |