[GR-24617] Re-raise the signal if the thread to handle it cannot be attached

Author: eregon

src/main/java/org/truffleruby/core/VMPrimitiveNodes.java

@@ -40,7 +40,6 @@
 import java.io.PrintStream;
 import java.util.Map.Entry;
 
-import com.oracle.truffle.api.CompilerDirectives;
 import org.jcodings.specific.ASCIIEncoding;
 import org.jcodings.specific.UTF8Encoding;
 import org.truffleruby.Layouts;
@@ -57,8 +56,8 @@
 import org.truffleruby.core.proc.ProcOperations;
 import org.truffleruby.core.rope.CodeRange;
 import org.truffleruby.core.string.StringNodes.MakeStringNode;
-import org.truffleruby.core.thread.ThreadManager;
 import org.truffleruby.core.string.StringOperations;
+import org.truffleruby.core.thread.ThreadManager;
 import org.truffleruby.language.backtrace.Backtrace;
 import org.truffleruby.language.control.ExitException;
 import org.truffleruby.language.control.RaiseException;
@@ -70,6 +69,7 @@
 import org.truffleruby.language.yield.YieldNode;
 import org.truffleruby.platform.Signals;
 
+import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.TruffleContext;
 import com.oracle.truffle.api.dsl.Cached;
@@ -79,6 +79,8 @@
 import com.oracle.truffle.api.profiles.BranchProfile;
 import com.oracle.truffle.api.profiles.ConditionProfile;
 
+import sun.misc.Signal;
+
 @CoreModule(value = "VMPrimitives", isClass = true)
 public abstract class VMPrimitiveNodes {
 
@@ -262,8 +264,13 @@ protected boolean watchSignalProc(DynamicObject signalName, DynamicObject action
                     final PrintStream printStream = new PrintStream(context.getEnv().err(), true);
                     printStream.println(
                             "[ruby] SEVERE: signal " + signal +
-                                    " caught but can't create a thread to handle it so ignoring and restoring the default handler");
+                                    " caught but can't attach a thread to handle it so restoring the default handler and re-raising the signal");
                     Signals.restoreDefaultHandler(signal);
+                    try {
+                        Signal.raise(new Signal(signal));
+                    } catch (IllegalArgumentException illegalArgumentException) {
+                        illegalArgumentException.printStackTrace(printStream);
+                    }
                     return;
                 }
                 try {