Prevent warnings "the block passed to ... may be ignored"

Merged: https://github.com/ruby/ruby/pull/11611

ext/socket/lib/socket.rb

@@ -648,11 +648,11 @@ class Socket < BasicSocket
   #     sock.close_write
   #     puts sock.read
   #   }
-  def self.tcp(host, port, local_host = nil, local_port = nil, connect_timeout: nil, resolv_timeout: nil, fast_fallback: tcp_fast_fallback, &block) # :yield: socket
+  def self.tcp(host, port, local_host = nil, local_port = nil, connect_timeout: nil, resolv_timeout: nil, fast_fallback: tcp_fast_fallback, &) # :yield: socket
     sock = if fast_fallback && !(host && ip_address?(host))
-      tcp_with_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:, &block)
+      tcp_with_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:)
     else
-      tcp_without_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:, &block)
+      tcp_without_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:)
     end
 
     if block_given?
@@ -897,7 +897,7 @@ class Socket < BasicSocket
     end
   end
 
-  def self.tcp_without_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:, &block)
+  def self.tcp_without_fast_fallback(host, port, local_host, local_port, connect_timeout:, resolv_timeout:)
     last_error = nil
     ret = nil
 

test/ruby/test_call.rb

@@ -3,7 +3,24 @@ require 'test/unit'
 require '-test-/iter'
 
 class TestCall < Test::Unit::TestCase
-  def aaa(a, b=100, *rest)
+  # These dummy method definitions prevent warnings "the block passed to 'a'..."
+  def a(&) = nil
+  def b(&) = nil
+  def c(&) = nil
+  def d(&) = nil
+  def e(&) = nil
+  def f(&) = nil
+  def g(&) = nil
+  def h(&) = nil
+  def i(&) = nil
+  def j(&) = nil
+  def k(&) = nil
+  def l(&) = nil
+  def m(&) = nil
+  def n(&) = nil
+  def o(&) = nil
+
+  def aaa(a, b=100, *rest, &)
     res = [a, b]
     res += rest if rest
     return res

test/ruby/test_iterator.rb

@@ -175,10 +175,13 @@ class TestIterator < Test::Unit::TestCase
   end
 
   def test_block_given
+    verbose_bak, $VERBOSE = $VERBOSE, nil
     assert(m1{p 'test'})
     assert(m2{p 'test'})
     assert(!m1())
     assert(!m2())
+  ensure
+    $VERBOSE = verbose_bak
   end
 
   def m3(var, &block)
@@ -308,7 +311,18 @@ class TestIterator < Test::Unit::TestCase
 
   def test_ljump
     assert_raise(LocalJumpError) {get_block{break}.call}
+    begin
+      verbose_bak, $VERBOSE = $VERBOSE, nil
+      # See the commit https://github.com/ruby/ruby/commit/7d8a415bc2d08a1b5e9d1ea802493b6eeb99c219
+      # This block is not used but this is intentional.
+      #   |
+      #   +-----------------------------------------------------+
+      #                                                         |
+      #                                                         vv
       assert_raise(LocalJumpError) {proc_call2(get_block{break}){}}
+    ensure
+      $VERBOSE = verbose_bak
+    end
 
     # cannot use assert_nothing_raised due to passing block.
     begin

test/ruby/test_proc.rb

@@ -207,10 +207,13 @@ class TestProc < Test::Unit::TestCase
   end
 
   def test_block_given_method
+    verbose_bak, $VERBOSE = $VERBOSE, nil
     m = method(:m_block_given?)
     assert(!m.call, "without block")
     assert(m.call {}, "with block")
     assert(!m.call, "without block second")
+  ensure
+    $VERBOSE = verbose_bak
   end
 
   def test_block_given_method_to_proc

test/ruby/test_syntax.rb

@@ -1387,7 +1387,7 @@ eom
 
   def test_block_after_cmdarg_in_paren
     bug11873 = '[ruby-core:72482] [Bug #11873]'
-    def bug11873.p(*);end;
+    def bug11873.p(*, &);end;
 
     assert_raise(LocalJumpError, bug11873) do
       bug11873.instance_eval do
@@ -2256,7 +2256,7 @@ eom
     end
   end
 
-  def caller_lineno(*)
+  def caller_lineno(*, &)
     caller_locations(1, 1)[0].lineno
   end
 end