GeezerVison

Fixes #3733.

Description

The oneAPI index kernel reads from the underlying buffer using view-relative indices but omits Param::offset. Indexing a non-zero-offset subarray with an index array therefore reads from the beginning of the parent array. Include the input buffer offset when calculating the source pointer, and add a regression test for indexing a slice with indices {0, 1, 2, 3}.

Validation

git diff --check passed. The ArrayFire test/build suite was not run: this environment has no CMake or C++ compiler/SYCL toolchain, and the assigned task prohibits using real GPU hardware. The regression test is committed for execution by the project’s backend test setup.

Changes to Users

None; this restores the documented view-relative indexing behavior.

Checklist

• Rebased on latest master
• Code compiles (not run: toolchain unavailable)
• Tests pass (not run: toolchain unavailable; oneAPI hardware prohibited)
• Functions added to unified API (N/A)
• Functions documented (N/A)