ddidderr
ca70ca8061
Move ZSTD_DDict allocation, ownership, construction, and public ABI exports into Rust. The C decoder keeps ZSTD_loadDEntropy until its table loader moves. The C shim now exposes C-computed DCtx field offsets. This keeps dictionary state correct across conditional C layouts, including fuzz fields and 32-bit static-BMI2 builds, without duplicating decoder-context layout in Rust. Test Plan: - cargo fmt, cargo clippy, cargo clippy --benches, cargo clippy --tests - cargo test --all-targets and cargo build --release - cargo test/build --target i686-unknown-linux-gnu - C fuzzer, zstreamtest, invalidDictionaries, and fuzzer32 smoke runs - fuzz-enabled and i686 -mbmi2 C/Rust dictionary roundtrip harnesses Refs: rust/README.md
34 lines
2.0 KiB
C
34 lines
2.0 KiB
C
/*
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* ZSTD_DDict implementation moved to rust/src/zstd_ddict.rs.
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*
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* Keep this translation unit in the original source list so the C build keeps
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* the same header configuration while the Rust static library provides the
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* exported symbols. The metadata below is deliberately compiled with the C
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* decoder's exact conditional layout: Rust uses it to fill the opaque DCtx
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* fields without duplicating optional C layout choices such as DYNAMIC_BMI2.
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*/
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#define ZSTD_STATIC_LINKING_ONLY
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#include "zstd_decompress_internal.h"
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#include "zstd_ddict.h"
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const size_t ZSTD_rust_ddict_llt_ptr_offset = offsetof(struct ZSTD_DCtx_s, LLTptr);
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const size_t ZSTD_rust_ddict_mlt_ptr_offset = offsetof(struct ZSTD_DCtx_s, MLTptr);
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const size_t ZSTD_rust_ddict_oft_ptr_offset = offsetof(struct ZSTD_DCtx_s, OFTptr);
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const size_t ZSTD_rust_ddict_huf_ptr_offset = offsetof(struct ZSTD_DCtx_s, HUFptr);
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const size_t ZSTD_rust_ddict_entropy_rep_offset = offsetof(struct ZSTD_DCtx_s, entropy.rep);
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const size_t ZSTD_rust_ddict_previous_dst_end_offset = offsetof(struct ZSTD_DCtx_s, previousDstEnd);
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const size_t ZSTD_rust_ddict_prefix_start_offset = offsetof(struct ZSTD_DCtx_s, prefixStart);
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const size_t ZSTD_rust_ddict_virtual_start_offset = offsetof(struct ZSTD_DCtx_s, virtualStart);
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const size_t ZSTD_rust_ddict_dict_end_offset = offsetof(struct ZSTD_DCtx_s, dictEnd);
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const size_t ZSTD_rust_ddict_lit_entropy_offset = offsetof(struct ZSTD_DCtx_s, litEntropy);
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const size_t ZSTD_rust_ddict_fse_entropy_offset = offsetof(struct ZSTD_DCtx_s, fseEntropy);
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const size_t ZSTD_rust_ddict_dict_id_offset = offsetof(struct ZSTD_DCtx_s, dictID);
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#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
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const size_t ZSTD_rust_ddict_fuzz_begin_offset = offsetof(struct ZSTD_DCtx_s, dictContentBeginForFuzzing);
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const size_t ZSTD_rust_ddict_fuzz_end_offset = offsetof(struct ZSTD_DCtx_s, dictContentEndForFuzzing);
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#else
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const size_t ZSTD_rust_ddict_fuzz_begin_offset = (size_t)-1;
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const size_t ZSTD_rust_ddict_fuzz_end_offset = (size_t)-1;
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#endif
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