* ext/json/parser/parser.rl (convert_encoding): should not modify

  the argument.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32458 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 5 deletions

diff --git a/ext/json/parser/parser.c b/ext/json/parser/parser.c
index 817597ede4..04bedf33a7 100644
--- a/ext/json/parser/parser.c
+++ b/ext/json/parser/parser.c
@@ -1551,6 +1551,7 @@ static VALUE convert_encoding(VALUE source)
             } else if (len >= 4 && ptr[1] == 0 && ptr[3] == 0) {
                 source = rb_funcall(source, i_encode, 2, CEncoding_UTF_8, CEncoding_UTF_16LE);
             } else {
+                source = rb_str_dup(source);
                 FORCE_UTF8(source);
             }
         } else {
@@ -1694,16 +1695,16 @@ static VALUE cParser_parse(VALUE self)
     GET_PARSER;
 
 
-#line 1698 "parser.c"
+#line 1699 "parser.c"
 	{
 	cs = JSON_start;
 	}
 
-#line 695 "parser.rl"
+#line 696 "parser.rl"
     p = json->source;
     pe = p + json->len;
 
-#line 1707 "parser.c"
+#line 1708 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -1780,7 +1781,7 @@ st10:
 	if ( ++p == pe )
 		goto _test_eof10;
 case 10:
-#line 1784 "parser.c"
+#line 1785 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st10;
 		case 32: goto st10;
@@ -1837,7 +1838,7 @@ case 9:
 	_out: {}
 	}
 
-#line 698 "parser.rl"
+#line 699 "parser.rl"
 
     if (cs >= JSON_first_final && p == pe) {
         return result;