a setjmp/longjmp based fallback mechanism is used in GNU Pth but that too is currently broken https://bugs.launchpad.net/ubuntu/+source/pth/+bug/599862
a setjmp/longjmp based fallback mechanism is used in GNU Pth but that too is currently broken /bugs.launchpad .net/ubuntu/ +source/ pth/+bug/ 599862
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