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IO#sysread should raise error when invalid pos

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ksss
2017-05-21 22:55:28 +09:00
parent 86edc9ab85
commit 0bbd60b523
2 changed files with 2 additions and 1 deletions
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src/io.c
+1 -1
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@@ -623,7 +623,7 @@ mrb_io_sysread(mrb_state *mrb, mrb_value io)
mrb_get_args(mrb, "i|S", &maxlen, &buf);
if (maxlen < 0) {
return mrb_nil_value();
mrb_raise(mrb, E_ARGUMENT_ERROR, "negative expanding string size");
}
else if (maxlen == 0) {
return mrb_str_new(mrb, NULL, maxlen);