diff options
| -rw-r--r-- | src/string.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index f5ac7b578..d34256e63 100644 --- a/src/string.c +++ b/src/string.c @@ -262,6 +262,10 @@ mrb_str_to_cstr(mrb_state *mrb, mrb_value str0) { mrb_value str; + if (!mrb_string_p(str0)) { + mrb_raise(mrb, E_TYPE_ERROR, "expected String"); + } + str = mrb_str_new(mrb, RSTRING_PTR(str0), RSTRING_LEN(str0)); if (strlen(RSTRING_PTR(str)) != RSTRING_LEN(str)) { mrb_raise(mrb, E_ARGUMENT_ERROR, "string contains null byte"); |