Explanation of the effects of this bug is done here:
https://bugs.openjdk.java.net/browse/JDK-8023786
Basically, if longjmp is ever called, generally in an error handler, then the JVM cannot be attached to by external tools such as jstack. The fix is to change setjmp/longjmp references to _setjmp/_longjmp which do not change the signal mask.
https://bugs.openjdk.java.net/browse/JDK-8023786
Basically, if longjmp is ever called, generally in an error handler, then the JVM cannot be attached to by external tools such as jstack. The fix is to change setjmp/longjmp references to _setjmp/_longjmp which do not change the signal mask.