lac/constraints_move: Fix undefined behavior #10519
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It is undefined behavior to access an object that has been moved. It is also not possible to "move back" an object. In this particular case with the recent changes to ThreadLocalStorage and AffineConstraints we run into an exception: constraints_move.debug: ../nptl/pthread_mutex_lock.c:117: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed. (The move operation destroys the mutex and accessing it afterwards when we try to move back results in a crash.)
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/rebuild |
peterrum
approved these changes
Jun 12, 2020
kronbichler
approved these changes
Jun 12, 2020
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It is undefined behavior to access an object that has been moved. It is
also not possible to "move back" an object.
In this particular case with the recent changes to ThreadLocalStorage
and AffineConstraints we run into an exception:
constraints_move.debug: ../nptl/pthread_mutex_lock.c:117: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.
(The move operation destroys the mutex and accessing it afterwards
when we try to move back results in a crash.)