Catalyst bug for controlled reflection

[renezander90]

Priority

Medium

Responsible

No response

Qrisp Version

0.9.5

Python Version

3.11.15

Operating System

macOS

Short Description

Catalyst compile error for Qrisp example with a reflection inside of a control environment.

Steps to Reproduce

from qrisp import *

@qjit
def main():
    qb = QuantumBool()
    ctrl = QuantumBool()
    h(qb)
    h(ctrl)

    with control(ctrl, ctrl_state=0):
        reflection([qb])

    return measure(qb), measure(ctrl)

main()

CompileError: catalyst failed with error code 1: Failed to run pipeline: GradientLoweringStage
Compilation failed:
While processing 'AnnotateInvalidGradientFunctionsPass' pass Failed to lower MLIR module

Expected Behavior

No compilation error.

Actual Behavior

Compilation error.

Means of Verification

Test-ID	Type	Description	Expected Result
T-001	Positive
T-002	Negative
T-003	Boundary
T-004	Boundary

Additional Context

No response

Definition of Done

• Root cause identified
• Fix implemented and peer-reviewed
• Regression test added
• All tests pass (CI green)
• Changelog entry added