Fix UnitaryGate.qasm() with unused qubits (backport #8234)
#8243
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The OpenQASM 2 exporter has a special case for providing `gate` definitions, which was implemented purely for `UnitaryGate`. This is stateful per instruction, and does not generally behave well with the rest of the exporter. This commit fixes one misbehaviour: the way the qubit operands for the definition was calculated was unreliable in both order and number of qubits, if any of the qubits were unaffected by the gate operation. Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> (cherry picked from commit 8d5e3ca)
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jakelishman
approved these changes
Jun 24, 2022
jakelishman
added
Changelog: Bugfix
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This is an automatic backport of pull request #8234 done by Mergify.
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