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mrb_str_cat: capa should be bigger than total.

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Yukihiro "Matz" Matsumoto
2017-08-18 23:40:27 +09:00
parent 8b5be554c7
commit a06adb176f
1 changed files with 3 additions and 3 deletions
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src/string.c
+3 -3
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@@ -2566,15 +2566,15 @@ mrb_str_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len)
mrb_raise(mrb, E_ARGUMENT_ERROR, "string size too big");
}
if (capa <= total) {
while (total > capa) {
while (capa <= total) {
if (capa <= MRB_INT_MAX / 2) {
capa *= 2;
}
else {
capa = total;
capa = total+1;
}
}
if (capa < total || capa > MRB_INT_MAX) {
if (capa <= total || capa > MRB_INT_MAX) {
goto size_error;
}
resize_capa(mrb, s, capa);