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Add negative check in mrb_str_resize; fix #4062

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Yukihiro "Matz" Matsumoto
2018-06-27 16:32:24 +09:00
parent 7e79840587
commit 695f29cd60
1 changed files with 3 additions and 0 deletions
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src/string.c
+3
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@@ -708,6 +708,9 @@ mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len)
mrb_int slen;
struct RString *s = mrb_str_ptr(str);
if (len < 0) {
mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative (or overflowed) string size");
}
mrb_str_modify(mrb, s);
slen = RSTR_LEN(s);
if (len != slen) {