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ruby-changes:46589

From: nobu <ko1@a...>
Date: Sat, 13 May 2017 23:20:25 +0900 (JST)
Subject: [ruby-changes:46589] nobu:r58705 (trunk): string.c: fix up r58703

nobu	2017-05-13 23:20:19 +0900 (Sat, 13 May 2017)

  New Revision: 58705

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58705

  Log:
    string.c: fix up r58703
    
    * string.c (rb_external_str_new_with_enc): fix the case of
      conversion failure.  when conversion failed for some reason,
      just ignores the default internal encoding and returns in the
      given encoding.

  Modified files:
    trunk/string.c
Index: string.c
===================================================================
--- string.c	(revision 58704)
+++ string.c	(revision 58705)
@@ -1008,8 +1008,12 @@ rb_external_str_new_with_enc(const char https://github.com/ruby/ruby/blob/trunk/string.c#L1008
     if (!ienc || eenc == ienc) {
 	return rb_tainted_str_new_with_enc(ptr, len, eenc);
     }
-    str = rb_tainted_str_new_with_enc(NULL, len, ienc);
-    rb_str_cat_conv_enc_opts(str, 0, ptr, len, eenc, 0, Qnil);
+    str = rb_tainted_str_new_with_enc(NULL, 0, ienc);
+    if (NIL_P(rb_str_cat_conv_enc_opts(str, 0, ptr, len, eenc, 0, Qnil))) {
+	STR_SET_LEN(str, 0);
+	rb_enc_associate(str, eenc);
+	rb_str_cat(str, ptr, len);
+    }
     return str;
 }
 

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