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Ran 08 Jan 2024 04:29PM UTC

Files 983

Run time 39s

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Committed 08 Jan 2024 02:57PM UTC coverage: 87.588% (+0.02%) from 87.565%

Job # 7450083753.1

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push

github

Committed by

web-flow

Commit Message

Detect duplicates in `QuantumCircuit.compose` (#11451)

* Detect duplicates in `QuantumCircuit.compose`

Previously, `QuantumCircuit.compose` would silently attempt to compose
multiple qubits onto the same state, which would fail in weird ways if
any multi-qubit instructions were acting on these collapsed qubits.

* Ensure error-checking happens before any modification

After the move of `QuantumCircuit.data` to Rust-space, some of the state
modification had started happening before the error checking, which
could potentially leave an in-place modification in a partially applied
state if an exception triggered during processing.

This also ensures that the qubits and clbits arguments are checked, even
if the actual data being composed is empty.

* Delay mutation until the last possible time

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main: 88%

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