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-rw-r--r--include/ruby/ruby.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index db3253da4..bea12e924 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -515,7 +515,7 @@ struct RString {
VALUE shared;
} aux;
} heap;
- char ary[RSTRING_EMBED_LEN_MAX];
+ char ary[RSTRING_EMBED_LEN_MAX + 1];
} as;
};
#define RSTRING_NOEMBED FL_USER1