6 #define ZSTD_STATIC_LINKING_ONLY
9 int compress(ZSTD_CStream *ctx, ZSTD_outBuffer out, const void *data, size_t size) {
10 ZSTD_inBuffer in = { data, size, 0 };
11 while (in.pos < in.size) {
12 ZSTD_outBuffer tmp = out;
13 const size_t rc = ZSTD_compressStream(ctx, &tmp, &in);
14 if (ZSTD_isError(rc)) {
19 ZSTD_outBuffer tmp = out;
20 const size_t rc = ZSTD_flushStream(ctx, &tmp);
21 if (rc != 0) { return 1; }
26 int main(int argc, const char** argv) {
28 ZSTD_parameters params;
34 ctx = ZSTD_createCStream();
35 if (!ctx) { return 1; }
37 memset(¶ms, 0, sizeof(params));
38 params.cParams.windowLog = 18;
39 params.cParams.chainLog = 13;
40 params.cParams.hashLog = 14;
41 params.cParams.searchLog = 1;
42 params.cParams.searchLength = 7;
43 params.cParams.targetLength = 16;
44 params.cParams.strategy = ZSTD_fast;
45 windowLog = params.cParams.windowLog;
46 /* Initialize stream */
47 rc = ZSTD_initCStream_advanced(ctx, NULL, 0, params, 0);
48 if (ZSTD_isError(rc)) { return 2; }
51 const U64 toCompress = ((U64)1) << 33;
52 const size_t size = 1 << windowLog;
54 char *srcBuffer = (char*) malloc(1 << windowLog);
55 char *dstBuffer = (char*) malloc(ZSTD_compressBound(1 << windowLog));
56 ZSTD_outBuffer out = { dstBuffer, ZSTD_compressBound(1 << windowLog), 0 };
57 const char match[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
58 const size_t randomData = (1 << windowLog) - 2*sizeof(match);
60 printf("\n === Long Match Test === \n");
61 printf("Creating random data to produce long matches \n");
62 for (i = 0; i < sizeof(match); ++i) {
63 srcBuffer[i] = match[i];
65 for (i = 0; i < randomData; ++i) {
66 srcBuffer[sizeof(match) + i] = (char)(rand() & 0xFF);
68 for (i = 0; i < sizeof(match); ++i) {
69 srcBuffer[sizeof(match) + randomData + i] = match[i];
71 printf("Compressing, trying to generate a segfault \n");
72 if (compress(ctx, out, srcBuffer, size)) {
76 while (compressed < toCompress) {
77 const size_t block = rand() % (size - pos + 1);
78 if (pos == size) { pos = 0; }
79 if (compress(ctx, out, srcBuffer + pos, block)) {
85 printf("Compression completed successfully (no error triggered)\n");