https://git.ruby-lang.org/ruby.git/commit/?id=302f353fd9

From 302f353fd9223d020e48495eaa7a03ce5d539409 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 1 Jul 2022 00:49:36 +0900
Subject: [ruby/stringio] Fix the result of `StringIO#truncate` so compatible
 with `File`

https://github.com/ruby/stringio/commit/16847fea32
---
 ext/stringio/stringio.c        | 2 +-
 test/stringio/test_stringio.rb | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 1b21c2e60f..9ba2cd92a1 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -1668,7 +1668,7 @@ strio_truncate(VALUE self, VALUE len) https://github.com/ruby/ruby/blob/trunk/ext/stringio/stringio.c#L1668
     if (plen < l) {
 	MEMZERO(RSTRING_PTR(string) + plen, char, l - plen);
     }
-    return len;
+    return INT2FIX(0);
 }
 
 /*
diff --git a/test/stringio/test_stringio.rb b/test/stringio/test_stringio.rb
index 3fcb20e1fa..34c4748185 100644
--- a/test/stringio/test_stringio.rb
+++ b/test/stringio/test_stringio.rb
@@ -39,11 +39,11 @@ class TestStringIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/stringio/test_stringio.rb#L39
   def test_truncate
     io = StringIO.new("")
     io.puts "abc"
-    io.truncate(0)
+    assert_equal(0, io.truncate(0))
     io.puts "def"
     assert_equal("\0\0\0\0def\n", io.string, "[ruby-dev:24190]")
     assert_raise(Errno::EINVAL) { io.truncate(-1) }
-    io.truncate(10)
+    assert_equal(0, io.truncate(10))
     assert_equal("\0\0\0\0def\n\0\0", io.string)
   end
 
-- 
cgit v1.2.1


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/