UPSTREAM PR #17651: ggml: added missing cast sections in memcpy

[loci-dev]

Mirrored from ggml-org/llama.cpp#17651

Isn't it correct to bring the blocks to the sections type, which is int, as above for float?

[loci-agentic-ai]

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Performance Analysis Report - PR #390

Project: llama.cpp
PR: #390 - "ggml: added missing cast sections in memcpy"
Change Scope: Single file modification in ggml/src/ggml.c

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Summary

This PR adds a missing type cast in the ggml_compute_backward function within the ROPE backward pass implementation. The change adds (const int *) cast when copying the sections parameter from tensor->op_params. This is a correctness fix that ensures proper type alignment when reading integer data from the operation parameters array, matching the pattern used for float parameters in the same code block. The modification affects 1 line in 1 file with no structural changes to control flow or algorithm logic.

The change is limited to the backward pass computation for ROPE operations, which is used during gradient computation for training or fine-tuning workflows. This code path is not executed during standard inference operations where only forward passes are performed. The cast ensures that the pointer arithmetic correctly interprets the memory layout of the op_params array when extracting the sections array for multi-rope configurations.

Given the nature of this change as a type safety correction with no algorithmic modifications, no performance impact on inference throughput or tokens per second is expected for standard inference workloads.