* string.c (rb_str_subpat_set): must make str independent after

  rb_reg_search() matched.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@2197 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/string.c b/string.c
index d83913c0e..41d697bce 100644
--- a/string.c
+++ b/string.c
@@ -1252,6 +1252,7 @@ rb_str_subpat_set(str, re, nth, val)
     }
     end = RMATCH(match)->END(nth);
     len = end - start;
+    rb_str_modify(str);
     rb_str_update(str, start, len, val);
 }