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7ed9d943b3
Half of developers were already forgetting to use these functions, which could have caused total breakage in some future liblzma version or even now if --enable-small was used. Now liblzma uses pthread_once() to do the initializations unless it has been built with --disable-threads which make these initializations thread-unsafe. When --enable-small isn't used, liblzma currently gets needlessly linked against libpthread (on systems that have it). While it is stupid for now, liblzma will need threads in future anyway, so this stupidity will be temporary only. When --enable-small is used, different code CRC32 and CRC64 is now used than without --enable-small. This made the resulting binary slightly smaller, but the main reason was to clean it up and to handle the lack of lzma_init_check(). The pkg-config file lzma.pc was renamed to liblzma.pc. I'm not sure if it works correctly and portably for static linking (Libs.private includes -pthread or other operating system specific flags). Hopefully someone complains if it is bad. lzma_rc_prices[] is now included as a precomputed array even with --enable-small. It's just 128 bytes now that it uses uint8_t instead of uint32_t. Smaller array seemed to be at least as fast as the more bloated uint32_t array on x86; hopefully it's not bad on other architectures.
288 lines
6.3 KiB
C
288 lines
6.3 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file test_filter_flags.c
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/// \brief Tests Filter Flags coders
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//
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// Copyright (C) 2007 Lasse Collin
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "tests.h"
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static uint8_t buffer[4096];
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static lzma_filter known_flags;
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static lzma_filter decoded_flags;
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static lzma_stream strm = LZMA_STREAM_INIT;
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static bool
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encode(uint32_t known_size)
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{
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memcrap(buffer, sizeof(buffer));
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uint32_t tmp;
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if (lzma_filter_flags_size(&tmp, &known_flags) != LZMA_OK)
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return true;
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if (tmp != known_size)
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return true;
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size_t out_pos = 0;
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if (lzma_filter_flags_encode(&known_flags,
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buffer, &out_pos, known_size) != LZMA_OK)
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return true;
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if (out_pos != known_size)
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return true;
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return false;
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}
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static bool
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decode_ret(uint32_t known_size, lzma_ret expected_ret)
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{
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memcrap(&decoded_flags, sizeof(decoded_flags));
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size_t pos = 0;
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if (lzma_filter_flags_decode(&decoded_flags, NULL,
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buffer, &pos, known_size) != expected_ret
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|| pos != known_size)
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return true;
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return false;
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}
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static bool
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decode(uint32_t known_size)
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{
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if (decode_ret(known_size, LZMA_OK))
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return true;
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if (known_flags.id != decoded_flags.id)
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return true;
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return false;
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}
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#if defined(HAVE_ENCODER_SUBBLOCK) && defined(HAVE_DECODER_SUBBLOCK)
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static void
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test_subblock(void)
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{
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// Test 1
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known_flags.id = LZMA_FILTER_SUBBLOCK;
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known_flags.options = NULL;
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expect(!encode(2));
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expect(!decode(2));
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expect(decoded_flags.options == NULL);
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// Test 2
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buffer[0] = LZMA_FILTER_SUBBLOCK;
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buffer[1] = 1;
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buffer[2] = 0;
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expect(!decode_ret(3, LZMA_OPTIONS_ERROR));
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}
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#endif
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#if defined(HAVE_ENCODER_X86) && defined(HAVE_DECODER_X86)
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static void
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test_simple(void)
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{
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// Test 1
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known_flags.id = LZMA_FILTER_X86;
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known_flags.options = NULL;
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expect(!encode(2));
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expect(!decode(2));
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expect(decoded_flags.options == NULL);
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// Test 2
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lzma_options_simple options;
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options.start_offset = 0;
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known_flags.options = &options;
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expect(!encode(2));
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expect(!decode(2));
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expect(decoded_flags.options == NULL);
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// Test 3
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options.start_offset = 123456;
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known_flags.options = &options;
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expect(!encode(6));
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expect(!decode(6));
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expect(decoded_flags.options != NULL);
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lzma_options_simple *decoded = decoded_flags.options;
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expect(decoded->start_offset == options.start_offset);
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free(decoded);
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}
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#endif
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#if defined(HAVE_ENCODER_DELTA) && defined(HAVE_DECODER_DELTA)
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static void
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test_delta(void)
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{
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// Test 1
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known_flags.id = LZMA_FILTER_DELTA;
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known_flags.options = NULL;
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expect(encode(99));
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// Test 2
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lzma_options_delta options = {
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.type = LZMA_DELTA_TYPE_BYTE,
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.dist = 0
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};
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known_flags.options = &options;
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expect(encode(99));
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// Test 3
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options.dist = LZMA_DELTA_DIST_MIN;
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expect(!encode(3));
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expect(!decode(3));
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expect(((lzma_options_delta *)(decoded_flags.options))->dist
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== options.dist);
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free(decoded_flags.options);
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// Test 4
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options.dist = LZMA_DELTA_DIST_MAX;
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expect(!encode(3));
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expect(!decode(3));
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expect(((lzma_options_delta *)(decoded_flags.options))->dist
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== options.dist);
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free(decoded_flags.options);
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// Test 5
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options.dist = LZMA_DELTA_DIST_MAX + 1;
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expect(encode(99));
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}
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#endif
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/*
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#ifdef HAVE_FILTER_LZMA
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static void
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validate_lzma(void)
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{
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const lzma_options_lzma *known = known_flags.options;
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const lzma_options_lzma *decoded = decoded_flags.options;
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expect(known->dictionary_size <= decoded->dictionary_size);
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if (known->dictionary_size == 1)
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expect(decoded->dictionary_size == 1);
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else
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expect(known->dictionary_size + known->dictionary_size / 2
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> decoded->dictionary_size);
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expect(known->literal_context_bits == decoded->literal_context_bits);
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expect(known->literal_pos_bits == decoded->literal_pos_bits);
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expect(known->pos_bits == decoded->pos_bits);
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}
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static void
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test_lzma(void)
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{
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// Test 1
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known_flags.id = LZMA_FILTER_LZMA1;
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known_flags.options = NULL;
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expect(encode(99));
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// Test 2
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lzma_options_lzma options = {
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.dictionary_size = 0,
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.literal_context_bits = 0,
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.literal_pos_bits = 0,
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.pos_bits = 0,
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.preset_dictionary = NULL,
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.preset_dictionary_size = 0,
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.mode = LZMA_MODE_INVALID,
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.fast_bytes = 0,
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.match_finder = LZMA_MF_INVALID,
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.match_finder_cycles = 0,
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};
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// Test 3 (empty dictionary not allowed)
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known_flags.options = &options;
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expect(encode(99));
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// Test 4 (brute-force test some valid dictionary sizes)
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options.dictionary_size = LZMA_DICTIONARY_SIZE_MIN;
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while (options.dictionary_size != LZMA_DICTIONARY_SIZE_MAX) {
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if (++options.dictionary_size == 5000)
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options.dictionary_size = LZMA_DICTIONARY_SIZE_MAX - 5;
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expect(!encode(4));
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expect(!decode(4));
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validate_lzma();
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free(decoded_flags.options);
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}
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// Test 5 (too big dictionary size)
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options.dictionary_size = LZMA_DICTIONARY_SIZE_MAX + 1;
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expect(encode(99));
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// Test 6 (brute-force test lc/lp/pb)
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options.dictionary_size = LZMA_DICTIONARY_SIZE_MIN;
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for (uint32_t lc = LZMA_LITERAL_CONTEXT_BITS_MIN;
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lc <= LZMA_LITERAL_CONTEXT_BITS_MAX; ++lc) {
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for (uint32_t lp = LZMA_LITERAL_POS_BITS_MIN;
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lp <= LZMA_LITERAL_POS_BITS_MAX; ++lp) {
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for (uint32_t pb = LZMA_POS_BITS_MIN;
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pb <= LZMA_POS_BITS_MAX; ++pb) {
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if (lc + lp > LZMA_LITERAL_BITS_MAX)
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continue;
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options.literal_context_bits = lc;
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options.literal_pos_bits = lp;
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options.pos_bits = pb;
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expect(!encode(4));
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expect(!decode(4));
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validate_lzma();
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free(decoded_flags.options);
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}
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}
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}
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}
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#endif
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*/
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int
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main(void)
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{
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#if defined(HAVE_ENCODER_SUBBLOCK) && defined(HAVE_DECODER_SUBBLOCK)
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test_subblock();
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#endif
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#if defined(HAVE_ENCODER_X86) && defined(HAVE_DECODER_X86)
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test_simple();
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#endif
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#if defined(HAVE_ENCODER_DELTA) && defined(HAVE_DECODER_DELTA)
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test_delta();
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#endif
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// #ifdef HAVE_FILTER_LZMA
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// test_lzma();
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// #endif
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lzma_end(&strm);
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return 0;
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}
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