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-rw-r--r--ext/stringio/stringio.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index bd83ea207be..368dcfec4ba 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -241,6 +241,19 @@ strio_s_open(int argc, VALUE *argv, VALUE klass)
return rb_ensure(rb_yield, obj, strio_finalize, obj);
}
+/* :nodoc: */
+static VALUE
+strio_s_new(int argc, VALUE *argv, VALUE klass)
+{
+ if (rb_block_given_p()) {
+ VALUE cname = rb_obj_as_string(klass);
+
+ rb_warn("%"PRIsVALUE"::new() does not take block; use %"PRIsVALUE"::open() instead",
+ cname, cname);
+ }
+ return rb_class_new_instance(argc, argv, klass);
+}
+
/*
* Returns +false+. Just for compatibility to IO.
*/
@@ -1523,6 +1536,7 @@ Init_stringio(void)
rb_include_module(StringIO, rb_mEnumerable);
rb_define_alloc_func(StringIO, strio_s_allocate);
+ rb_define_singleton_method(StringIO, "new", strio_s_new, -1);
rb_define_singleton_method(StringIO, "open", strio_s_open, -1);
rb_define_method(StringIO, "initialize", strio_initialize, -1);
rb_define_method(StringIO, "initialize_copy", strio_copy, 1);