4 files changed, 40 insertions, 5 deletions
diff --git a/spec/ruby/library/bigdecimal/BigDecimal_spec.rb b/spec/ruby/library/bigdecimal/BigDecimal_spec.rb
index 4e839e21a3..5da0210145 100644
--- a/spec/ruby/library/bigdecimal/BigDecimal_spec.rb
+++ b/spec/ruby/library/bigdecimal/BigDecimal_spec.rb
@@ -112,6 +112,17 @@ describe "Kernel#BigDecimal" do
     neg_inf.should < 0
   end
 
+  ruby_version_is "2.6" do
+    describe "with exception: false" do
+      it "returns nil for invalid strings" do
+        BigDecimal("invalid", exception: false).should be_nil
+        BigDecimal("0invalid", exception: false).should be_nil
+        BigDecimal("invalid0", exception: false).should be_nil
+        BigDecimal("0.", exception: false).should be_nil
+      end
+    end
+  end
+
   describe "accepts NaN and [+-]Infinity as Float values" do
     it "works without an explicit precision" do
       BigDecimal(Float::NAN).should.nan?
diff --git a/spec/ruby/library/net/http/http/get_spec.rb b/spec/ruby/library/net/http/http/get_spec.rb
index 35bd51d9a3..dbdca4a431 100644
--- a/spec/ruby/library/net/http/http/get_spec.rb
+++ b/spec/ruby/library/net/http/http/get_spec.rb
@@ -60,15 +60,16 @@ describe "Net::HTTP.get" do
         Thread.current.report_on_exception = false
         Net::HTTP.get("127.0.0.1", '/', server.connect_address.ip_port)
       end
+
+      socket = server_thread.value
       Thread.pass until client_thread.stop?
 
-      [server_thread, client_thread]
+      [socket, client_thread]
     end
 
     it "propagates exceptions interrupting the thread and does not replace it with Zlib::BufError" do
       my_exception = Class.new(RuntimeError)
-      server_thread, client_thread = start_threads
-      socket = server_thread.value
+      socket, client_thread = start_threads
       begin
         client_thread.raise my_exception, "my exception"
         -> { client_thread.value }.should raise_error(my_exception)
@@ -79,8 +80,7 @@ describe "Net::HTTP.get" do
 
     ruby_version_is "2.8" do # https://bugs.ruby-lang.org/issues/13882#note-6
       it "lets the kill Thread exception goes through and does not replace it with Zlib::BufError" do
-        server_thread, client_thread = start_threads
-        socket = server_thread.value
+        socket, client_thread = start_threads
         begin
           client_thread.kill
           client_thread.value.should == nil
diff --git a/spec/ruby/library/objectspace/memsize_of_spec.rb b/spec/ruby/library/objectspace/memsize_of_spec.rb
index 06a80d9f9c..36d845824d 100644
--- a/spec/ruby/library/objectspace/memsize_of_spec.rb
+++ b/spec/ruby/library/objectspace/memsize_of_spec.rb
@@ -12,6 +12,10 @@ describe "ObjectSpace.memsize_of" do
     ObjectSpace.memsize_of(42).should == 0
   end
 
+  it "returns 0 for literal Symbols" do
+    ObjectSpace.memsize_of(:abc).should == 0
+  end
+
   it "returns an Integer for an Object" do
     obj = Object.new
     ObjectSpace.memsize_of(obj).should be_kind_of(Integer)
diff --git a/spec/ruby/library/socket/tcpserver/accept_spec.rb b/spec/ruby/library/socket/tcpserver/accept_spec.rb
index 0da4e2218b..d38d95e0e1 100644
--- a/spec/ruby/library/socket/tcpserver/accept_spec.rb
+++ b/spec/ruby/library/socket/tcpserver/accept_spec.rb
@@ -58,6 +58,26 @@ describe "TCPServer#accept" do
     t.join
   end
 
+  it "is automatically retried when interrupted by SIGVTALRM" do
+    t = Thread.new do
+      client = @server.accept
+      value = client.read(2)
+      client.close
+      value
+    end
+
+    Thread.pass while t.status and t.status != "sleep"
+    # Thread#backtrace uses SIGVTALRM on TruffleRuby and potentially other implementations.
+    # Sending a signal to a thread is not possible with Ruby APIs.
+    t.backtrace.join("\n").should.include?("in `accept'")
+
+    socket = TCPSocket.new('127.0.0.1', @port)
+    socket.write("OK")
+    socket.close
+
+    t.value.should == "OK"
+  end
+
   it "raises an IOError if the socket is closed" do
     @server.close
     -> { @server.accept }.should raise_error(IOError)