[GR-17457] Handle a null backtrace in ThreadManager#setException #3375
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* This hapenned in CI for ruby-test-mri-asserts:
java.lang.RuntimeException: Ruby Thread id=259 from test/mri/tests/ruby/test_io.rb:2916 terminated with internal error:
at org.graalvm.ruby/org.truffleruby.core.thread.ThreadManager.printInternalError(ThreadManager.java:361)
at org.graalvm.ruby/org.truffleruby.core.thread.ThreadManager.lambda$uncaughtExceptionHandler$3(ThreadManager.java:240)
at java.base/java.lang.Thread.dispatchUncaughtException(Thread.java:2901)
Caused by: java.lang.NullPointerException: Cannot invoke "org.truffleruby.language.backtrace.Backtrace.getRaiseException()" because "exception.backtrace" is null
at org.graalvm.ruby/org.truffleruby.core.thread.ThreadManager.setException(ThreadManager.java:389)
at org.graalvm.ruby/org.truffleruby.core.thread.ThreadManager.threadMain(ThreadManager.java:344)
at org.graalvm.ruby/org.truffleruby.core.thread.ThreadManager.lambda$initialize$4(ThreadManager.java:321)
at java.base/java.lang.Thread.run(Thread.java:1583)
at org.graalvm.truffle/com.oracle.truffle.polyglot.PolyglotThread.access$001(PolyglotThread.java:53)
at org.graalvm.truffle/com.oracle.truffle.polyglot.PolyglotThread$1.execute(PolyglotThread.java:106)
at org.graalvm.truffle/com.oracle.truffle.polyglot.PolyglotThread$ThreadSpawnRootNode.executeImpl(PolyglotThread.java:140)
at org.graalvm.truffle/com.oracle.truffle.polyglot.PolyglotThread$ThreadSpawnRootNode.execute(PolyglotThread.java:131)
at org.graalvm.truffle/com.oracle.truffle.api.impl.DefaultCallTarget.callDirectOrIndirect(DefaultCallTarget.java:85)
at org.graalvm.truffle/com.oracle.truffle.api.impl.DefaultCallTarget.call(DefaultCallTarget.java:102)
at org.graalvm.truffle/com.oracle.truffle.polyglot.PolyglotThread.run(PolyglotThread.java:102)
Suppressed: Attached Guest Language Frames (1)
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