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fix segmentation fault in Array#last

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This commit is contained in:
Akira Kuroda
2012-07-25 00:05:51 +09:00
parent c98134905f
commit f114e3e252
2 changed files with 12 additions and 1 deletions
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src/array.c
+3
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@@ -789,6 +789,9 @@ mrb_ary_last(mrb_state *mrb, mrb_value self)
/* len == 1 */
size = mrb_fixnum(*vals);
if (size < 0) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "negative array size");
}
if (size > a->len) size = a->len;
if ((a->flags & MRB_ARY_SHARED) || size > ARY_DEFAULT_LEN) {
return ary_subseq(mrb, a, a->len - size, size);