mrb_str_concat was broken for shared strings; close #214

cd48737e · Yukihiro Matsumoto · 30556ad9 · cd48737e
Commit cd48737e authored Jun 02, 2012 by Yukihiro Matsumoto
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src/string.c src/string.c +1 -0

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--- a/src/string.c
+++ b/src/string.c
@@ -337,6 +337,7 @@ mrb_str_concat(mrb_state *mrb, mrb_value self, mrb_value other)
  struct RString *s1 = mrb_str_ptr(self), *s2;
  int len;

+  str_modify(mrb, self);
  if (mrb_type(other) != MRB_TT_STRING) {
    other = mrb_str_to_str(mrb, other);
  }