Skip 3 specs on 32 bit architectures

spec/helpers.rb

@@ -11,6 +11,7 @@
 require_relative 'helpers/tcp_gate_scheduler'
 require_relative 'helpers/tcp_gate_switcher'
 require_relative 'helpers/tcp_gate_switcher_process'
+require 'rbconfig/sizeof'
 
 TEST_DIRECTORY = Pathname.new(ENV['RUBY_PG_TEST_DIR'] || Dir.pwd)
 DATA_OBJ_MEMSIZE = ObjectSpace.memsize_of(Object.new)
@@ -691,6 +692,7 @@ def set_etc_hosts(hostaddr, hostname)
 	rescue LoadError
 		config.filter_run_excluding( :bigdecimal )
 	end
+	config.filter_run_excluding( :arch64 ) if RbConfig::SIZEOF["void*"] < 8
 
 	### Automatically set up and tear down the database
 	config.before(:suite) do |*args|

spec/pg/connection_spec.rb

@@ -2916,7 +2916,7 @@ def wait_check_socket(conn)
 				end
 			end
 
-			it "should encode big strings with typecasting without overflow" do
+			it "should encode big strings with typecasting without overflow", :arch64 do
 				big_count = 100
 				step = 42_949_673
 				big_len = (step - 3) / 2

spec/pg/type_spec.rb

@@ -1375,7 +1375,7 @@ def expect_deprecated_coder_init
 					expect( v ).to eq( "Héllo\n".encode(Encoding::ISO_8859_1) )
 				end
 
-				it "should encode big strings without crash" do
+				it "should encode big strings without crash", :arch64 do
 					skip if RUBY_ENGINE=="truffleruby"
 					n = 1 << 30
 					small = "A" * 100
@@ -1459,7 +1459,7 @@ def expect_deprecated_coder_init
 					expect( v.b ).to eq( "\x00\x01\x00\x00\x00\x05H\xE9llo".b )
 				end
 
-				it "should encode big strings without crash" do
+				it "should encode big strings without crash", :arch64 do
 					skip if RUBY_ENGINE=="truffleruby"
 					n = 2_147_483_644
 					wrapped = ((n + 4 + (1 << 31)) % (1 << 32)) - (1 << 31)