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Fix index out of bounds under the disallow_large_window_size feature - #267
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BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS was defined twice: unconditionally 544 in enc/constants.rs and privately in enc/histogram.rs, where only that copy shrank to 520 under disallow_large_window_size. The histogram array took the private value while every bound took the public one, so the encoder indexed one past the end. Keep one feature-aware definition.
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cargo test --features disallow_large_window_sizepanics inBrotliOptimizeHuffmanCountsForRlewithindex out of bounds: the len is 520 but the index is 520(integration_tests::test_ukkonooa), and so does compressing ordinary text with that feature on.BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLSwas defined twice:puband unconditionally 544 inenc/constants.rs, and privately inenc/histogram.rs, where only that copy shrank to 520 under the feature.HistogramDistance::data_took the private value while every bound took the public one.This keeps one feature-aware definition in
constants.rsand imports it fromhistogram.rs. The default build still reads 544.Tests:
cargo test --features disallow_large_window_sizenow passes (42 + 101).cargo fmt --check,cargo test,cargo test --docandcargo test --features portable-floatpass as before.