test fails when MRB_UTF8_STRING is defined about mruby-onig-regexp

[masahino]

I use latest version of mruby(6b2f08d).

[mattn]

Hmm, can't repro

[masahino]

On my environment(tried on Mac and Ubuntu), mrb_str_new is called with len = -3 at str_substr.

mruby-onig-regexp/src/mruby_onig_regexp.c

Line 105 in 76087d1

return mrb_str_new(mrb, RSTRING_PTR(str) + beg, len);

This is because reg->end[0] = 4 in match_data_post_match, but I am not sure if this is the correct behavior.

mruby-onig-regexp/src/mruby_onig_regexp.c

Line 646 in 76087d1

return str_substr(mrb, str, reg->end[0], RSTRING_LEN(str) - reg->end[0]);

How about checking len as follows?

masahino@25b1522

[mattn]

Looks good. Could you please send me PR?