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ruby-changes:50955

From: nobu <ko1@a...>
Date: Mon, 16 Apr 2018 15:37:48 +0900 (JST)
Subject: [ruby-changes:50955] nobu:r63162 (trunk): string.c: fix checking order

nobu	2018-04-16 15:37:42 +0900 (Mon, 16 Apr 2018)

  New Revision: 63162

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63162

  Log:
    string.c: fix checking order
    
    * string.c (str_undump): check for suffix before if Unicode escape
      conflicts with it.  the message "but used force_encoding" sounds
      strange when it is not used.

  Modified files:
    trunk/string.c
    trunk/test/ruby/test_string.rb
Index: string.c
===================================================================
--- string.c	(revision 63161)
+++ string.c	(revision 63162)
@@ -6289,15 +6289,15 @@ str_undump(VALUE str) https://github.com/ruby/ruby/blob/trunk/string.c#L6289
 		int encidx;
 		ptrdiff_t size;
 
-		if (utf8) {
-		    rb_raise(rb_eRuntimeError, "dumped string contained Unicode escape but used force_encoding");
-		}
-
 		size = rb_strlen_lit(".force_encoding(\"");
 		if (s_end - s <= size) goto invalid_format;
 		if (memcmp(s, ".force_encoding(\"", size) != 0) goto invalid_format;
 		s += size;
 
+		if (utf8) {
+		    rb_raise(rb_eRuntimeError, "dumped string contained Unicode escape but used force_encoding");
+		}
+
 		encname = s;
 		s = memchr(s, '"', s_end-s);
 		size = s - encname;
Index: test/ruby/test_string.rb
===================================================================
--- test/ruby/test_string.rb	(revision 63161)
+++ test/ruby/test_string.rb	(revision 63162)
@@ -814,6 +814,9 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L814
     assert_raise(RuntimeError) { S('"\xA"').undump }
     assert_raise(RuntimeError) { S('"\\"').undump }
     assert_raise(RuntimeError) { S(%("\0")).undump }
+    assert_raise_with_message(RuntimeError, /invalid/) {
+      '"\\u{007F}".xxxxxx'.undump
+    }
   end
 
   def test_dup

--
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