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Fix typing error in random_circuit conditionals #9651

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jakelishman
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@jakelishman jakelishman commented Feb 24, 2023

Summary

The condition field is expected to be a comparison of a register or bit with a Python bigint (or bool, which is a subclass). This function could previously output fixed-width Numpy types, however, which could cause problems with subsequent bitmasks if the constructed masker/maskee was a Python bigint and couldn't fit in the Numpy type. The more recent IfElseOp enforces the correct typing, it's just the old form that doesn't.

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Fix #9649

The `condition` field is expected to be a comparison of a register or
bit with a Python bigint (or bool, which is a subclass).  This function
could previously output fixed-width Numpy types, however, which could
cause problems with subsequent bitmasks if the constructed masker/maskee
_was_ a Python bigint and couldn't fit in the Numpy type.  The more
recent `IfElseOp` enforces the correct typing, it's just the old form
that doesn't.
@jakelishman jakelishman added stable backport potential The bug might be minimal and/or import enough to be port to stable Changelog: Bugfix Include in the "Fixed" section of the changelog labels Feb 24, 2023
@jakelishman jakelishman added this to the 0.23.3 milestone Feb 24, 2023
@jakelishman jakelishman requested a review from a team as a code owner February 24, 2023 14:51
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coveralls commented Feb 24, 2023

Pull Request Test Coverage Report for Build 4264841870

  • 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
  • 9 unchanged lines in 2 files lost coverage.
  • Overall coverage increased (+0.08%) to 85.342%

Files with Coverage Reduction New Missed Lines %
src/sabre_swap/mod.rs 2 99.53%
src/vf2_layout.rs 7 88.14%
Totals Coverage Status
Change from base Build 4264840773: 0.08%
Covered Lines: 67520
Relevant Lines: 79117

💛 - Coveralls

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LGTM!

@jlapeyre
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LGTM

@mergify mergify bot merged commit 94e9480 into Qiskit:main Feb 24, 2023
mergify bot pushed a commit that referenced this pull request Feb 24, 2023
The `condition` field is expected to be a comparison of a register or
bit with a Python bigint (or bool, which is a subclass).  This function
could previously output fixed-width Numpy types, however, which could
cause problems with subsequent bitmasks if the constructed masker/maskee
_was_ a Python bigint and couldn't fit in the Numpy type.  The more
recent `IfElseOp` enforces the correct typing, it's just the old form
that doesn't.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit 94e9480)
@jakelishman jakelishman deleted the fix-random-circuit-conditional-output branch February 24, 2023 18:43
mergify bot added a commit that referenced this pull request Feb 24, 2023
The `condition` field is expected to be a comparison of a register or
bit with a Python bigint (or bool, which is a subclass).  This function
could previously output fixed-width Numpy types, however, which could
cause problems with subsequent bitmasks if the constructed masker/maskee
_was_ a Python bigint and couldn't fit in the Numpy type.  The more
recent `IfElseOp` enforces the correct typing, it's just the old form
that doesn't.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit 94e9480)

Co-authored-by: Jake Lishman <[email protected]>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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Random-circuit conditional generation outputs incorrect typed comparison values
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