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-rw-r--r--ext/json/ext/parser/parser.rl1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/json/ext/parser/parser.rl b/ext/json/ext/parser/parser.rl
index e7d47e1..8c4681d 100644
--- a/ext/json/ext/parser/parser.rl
+++ b/ext/json/ext/parser/parser.rl
@@ -688,6 +688,7 @@ static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
json->object_class = Qnil;
json->array_class = Qnil;
}
+ source = rb_convert_type(source, T_STRING, "String", "to_str");
if (!json->quirks_mode) {
source = convert_encoding(StringValue(source));
}