From 5b944457d1383d9e3183fae5a400b75c2948c468 Mon Sep 17 00:00:00 2001 From: akr Date: Mon, 7 Jan 2008 22:57:00 +0000 Subject: * string.c (rb_str_buf_append): fix append itself. git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@14941 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- string.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'string.c') diff --git a/string.c b/string.c index 95c4e0c44..189cc1b75 100644 --- a/string.c +++ b/string.c @@ -1166,7 +1166,13 @@ rb_enc_str_buf_cat(VALUE str, const char *ptr, long len, rb_encoding *ptr_enc) VALUE rb_str_buf_append(VALUE str, VALUE str2) { - int str2_cr = ENC_CODERANGE(str2); + int str2_cr; + + if (str == str2) { + str2 = rb_str_dup(str2); + } + + str2_cr = ENC_CODERANGE(str2); rb_enc_cr_str_buf_cat(str, RSTRING_PTR(str2), RSTRING_LEN(str2), ENCODING_GET(str2), str2_cr, &str2_cr); -- cgit