mirror of https://github.com/Qiskit/qiskit.git
10 lines
555 B
YAML
10 lines
555 B
YAML
---
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fixes:
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- |
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The :class:`.BarrierBeforeFinalMeasurements` and :class:`.MergeAdjacentBarriers` transpiler
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passes previously had a non-deterministic order of their emitted :class:`.Barrier` instructions.
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This did not change the semantics of circuits but could, in limited cases where there were
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non-full-width barriers, cause later stochastic transpiler passes to see a different topological
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ordering of the circuit and consequently have different outputs for fixed seeds. The passes
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have been made deterministic to avoid this.
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