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/* Generated by fuzzing - test hash_head == 0 handling. */
#include "zbuild.h"
#ifdef ZLIB_COMPAT
# include "zlib.h"
#else
# include "zlib-ng.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "test_shared.h"
#include <gtest/gtest.h>
TEST(deflate, hash_head_0) {
PREFIX3(stream) strm;
int err;
memset(&strm, 0, sizeof(strm));
err = PREFIX(deflateInit2)(&strm, 1, Z_DEFLATED, -15, 4, Z_HUFFMAN_ONLY);
EXPECT_EQ(err, Z_OK);
unsigned char next_in[9698];
memset(next_in, 0x30, sizeof(next_in));
next_in[8193] = 0x00;
next_in[8194] = 0x00;
next_in[8195] = 0x00;
next_in[8199] = 0x8a;
strm.next_in = next_in;
unsigned char next_out[21572];
strm.next_out = next_out;
strm.avail_in = 0;
strm.avail_out = 1348;
err = PREFIX(deflateParams(&strm, 3, Z_FILTERED));
EXPECT_EQ(err, Z_OK);
strm.avail_in = 6728;
strm.avail_out = 2696;
err = PREFIX(deflate(&strm, Z_SYNC_FLUSH));
EXPECT_EQ(err, Z_OK);
strm.avail_in = 15;
strm.avail_out = 1348;
err = PREFIX(deflateParams(&strm, 9, Z_FILTERED));
EXPECT_EQ(err, Z_OK);
strm.avail_in = 1453;
strm.avail_out = 1348;
err = PREFIX(deflate(&strm, Z_FULL_FLUSH));
EXPECT_EQ(err, Z_OK);
strm.avail_in = (uint32_t)(next_in + sizeof(next_in) - strm.next_in);
strm.avail_out = (uint32_t)(next_out + sizeof(next_out) - strm.next_out);
err = PREFIX(deflate)(&strm, Z_FINISH);
EXPECT_EQ(err, Z_STREAM_END);
uint32_t compressed_size = (uint32_t)(strm.next_out - next_out);
err = PREFIX(deflateEnd)(&strm);
EXPECT_EQ(err, Z_OK);
memset(&strm, 0, sizeof(strm));
err = PREFIX(inflateInit2)(&strm, -MAX_WBITS);
EXPECT_EQ(err, Z_OK);
strm.next_in = next_out;
strm.avail_in = compressed_size;
unsigned char uncompressed[sizeof(next_in)];
strm.next_out = uncompressed;
strm.avail_out = sizeof(uncompressed);
err = PREFIX(inflate)(&strm, Z_NO_FLUSH);
EXPECT_EQ(err, Z_STREAM_END);
err = PREFIX(inflateEnd)(&strm);
EXPECT_EQ(err, Z_OK);
EXPECT_TRUE(memcmp(uncompressed, next_in, sizeof(uncompressed)) == 0);
}
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