Merge io-nonblock 0.3.2

Author: hsbt

ext/io/nonblock/extconf.rb

@@ -7,7 +7,7 @@
   return
 end
 
-have_func("rb_io_descriptor")
+have_func("rb_io_descriptor", "ruby/io.h")
 
 hdr = %w"fcntl.h"
 if have_macro("O_NONBLOCK", hdr) and

ext/io/nonblock/io-nonblock.gemspec

@@ -1,14 +1,14 @@
 Gem::Specification.new do |spec|
   spec.name          = "io-nonblock"
-  spec.version       = "0.3.1"
+  spec.version       = "0.3.2"
   spec.authors       = ["Nobu Nakada"]
   spec.email         = ["[email protected]"]
 
   spec.summary       = %q{Enables non-blocking mode with IO class}
   spec.description   = %q{Enables non-blocking mode with IO class}
   spec.homepage      = "https://github.com/ruby/io-nonblock"
   spec.licenses      = ["Ruby", "BSD-2-Clause"]
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 3.0")
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage