22071119879

Committed 16 Feb 2026 04:49PM UTC coverage: 94.322% (-0.5%) from 94.861%

Build # 22071119879

Build Type

Pull #1975

github

Committed by

web-flow

Commit Message

Merge 81c96c6b4 into 3f81a5cb4

Pull Request Pull Request #1975: Split CRC32 Braid and Chorba word types

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7201 of 7711 branches covered (93.39%)

Branch coverage included in aggregate %.

182 of 182 new or added lines in 1 file covered. (100.0%)

48 existing lines in 13 files now uncovered.

10608 of 11170 relevant lines covered (94.97%)

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91.09

/test/fuzz/fuzzer_example_large.c

#include <stdio.h>
#include <assert.h>
#include <inttypes.h>

#include "zbuild.h"
#ifdef ZLIB_COMPAT
#  include "zlib.h"
#else
#  include "zlib-ng.h"
#endif

#define CHECK_ERR(err, msg) { \
    if (err != Z_OK) { \
        fprintf(stderr, "%s error: %d\n", msg, err); \
        exit(1); \
    } \
}

static const uint8_t *data;
static size_t dataLen;
static alloc_func zalloc = NULL;
static free_func zfree = NULL;
static unsigned int diff;

/* ===========================================================================
 * Test deflate() with large buffers and dynamic change of compression level
 */
void test_large_deflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
    PREFIX3(stream) c_stream; /* compression stream */
    int err;

    c_stream.zalloc = zalloc;
    c_stream.zfree = zfree;
    c_stream.opaque = (void *)0;

    err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);
    CHECK_ERR(err, "deflateInit");

    c_stream.next_out = compr;
    c_stream.avail_out = (unsigned int)comprLen;

    /* At this point, uncompr is still mostly zeroes, so it should compress
     * very well:
     */
    c_stream.next_in = uncompr;
    c_stream.avail_in = (unsigned int)uncomprLen;
    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate large 1");
    if (c_stream.avail_in != 0) {
        fprintf(stderr, "deflate not greedy\n");
        exit(1);
    }

    /* Feed in already compressed data and switch to no compression: */
    PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
    c_stream.next_in = compr;
    diff = (unsigned int)(c_stream.next_out - compr);
    c_stream.avail_in = diff;
    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate large 2");

    /* Switch back to compressing mode: */
    PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
    c_stream.next_in = uncompr;
    c_stream.avail_in = (unsigned int)uncomprLen;
    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate large 3");

    err = PREFIX(deflate)(&c_stream, Z_FINISH);
    if (err != Z_STREAM_END) {
        fprintf(stderr, "deflate large should report Z_STREAM_END\n");
        exit(1);
    }
    err = PREFIX(deflateEnd)(&c_stream);
    CHECK_ERR(err, "deflateEnd");
}

/* ===========================================================================
 * Test inflate() with large buffers
 */
void test_large_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
    int err;
    PREFIX3(stream) d_stream; /* decompression stream */

    d_stream.zalloc = zalloc;
    d_stream.zfree = zfree;
    d_stream.opaque = (void *)0;

    d_stream.next_in = compr;
    d_stream.avail_in = (unsigned int)comprLen;

    err = PREFIX(inflateInit)(&d_stream);
    CHECK_ERR(err, "inflateInit");

    for (;;) {
        d_stream.next_out = uncompr; /* discard the output */
        d_stream.avail_out = (unsigned int)uncomprLen;
        err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
        if (err == Z_STREAM_END)
            break;
        CHECK_ERR(err, "large inflate");
    }

    err = PREFIX(inflateEnd)(&d_stream);
    CHECK_ERR(err, "inflateEnd");

    if (d_stream.total_out != 2 * uncomprLen + diff) {
        fprintf(stderr, "bad large inflate: %" PRIu64 "\n", (uint64_t)d_stream.total_out);
        exit(1);
    }
}

int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) {
    size_t comprLen = 100 + 3 * size;
    size_t uncomprLen = comprLen;
    uint8_t *compr, *uncompr;

    /* Discard inputs larger than 512Kb. */
    static size_t kMaxSize = 512 * 1024;

    if (size < 1 || size > kMaxSize)
        return 0;

    data = d;
    dataLen = size;
    compr = (uint8_t *)calloc(1, comprLen);
    uncompr = (uint8_t *)calloc(1, uncomprLen);

    test_large_deflate(compr, comprLen, uncompr, uncomprLen);
    test_large_inflate(compr, comprLen, uncompr, uncomprLen);

    free(compr);
    free(uncompr);

    /* This function must return 0. */
    return 0;
}

1	#include <stdio.h>
2	#include <assert.h>
3	#include <inttypes.h>
4
5	#include "zbuild.h"
6	#ifdef ZLIB_COMPAT
7	# include "zlib.h"
8	#else
9	# include "zlib-ng.h"
10	#endif
11
12	#define CHECK_ERR(err, msg) { \
13	if (err != Z_OK) { \
14	fprintf(stderr, "%s error: %d\n", msg, err); \
15	exit(1); \
16	} \
17	}
18
19	static const uint8_t *data;
20	static size_t dataLen;
21	static alloc_func zalloc = NULL;
22	static free_func zfree = NULL;
23	static unsigned int diff;
24
25	/* ===========================================================================
26	* Test deflate() with large buffers and dynamic change of compression level
27	*/
28	void test_large_deflate(unsigned char compr, size_t comprLen, unsigned char uncompr, size_t uncomprLen) {	2,450✔
29	PREFIX3(stream) c_stream; /* compression stream */	728✔
30	int err;	728✔
31
32	c_stream.zalloc = zalloc;	2,450✔
33	c_stream.zfree = zfree;	2,450✔
34	c_stream.opaque = (void *)0;	2,450✔
35
36	err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);	2,450✔
37	CHECK_ERR(err, "deflateInit");	2,450✔
38
39	c_stream.next_out = compr;	2,450✔
40	c_stream.avail_out = (unsigned int)comprLen;	2,450✔
41
42	/* At this point, uncompr is still mostly zeroes, so it should compress
43	* very well:
44	*/
45	c_stream.next_in = uncompr;	2,450✔
46	c_stream.avail_in = (unsigned int)uncomprLen;	2,450✔
47	err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);	2,450✔
48	CHECK_ERR(err, "deflate large 1");	2,450✔
49	if (c_stream.avail_in != 0) {	2,450✔
50	fprintf(stderr, "deflate not greedy\n");	×
51	exit(1);	×
52	}
53
54	/* Feed in already compressed data and switch to no compression: */
55	PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);	2,450✔
56	c_stream.next_in = compr;	2,450✔
57	diff = (unsigned int)(c_stream.next_out - compr);	2,450✔
58	c_stream.avail_in = diff;	2,450✔
59	err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);	2,450✔
60	CHECK_ERR(err, "deflate large 2");	2,450✔
61
62	/* Switch back to compressing mode: */
63	PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);	2,450✔
64	c_stream.next_in = uncompr;	2,450✔
65	c_stream.avail_in = (unsigned int)uncomprLen;	2,450✔
66	err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);	2,450✔
67	CHECK_ERR(err, "deflate large 3");	2,450✔
68
69	err = PREFIX(deflate)(&c_stream, Z_FINISH);	2,450✔
70	if (err != Z_STREAM_END) {	2,450✔
71	fprintf(stderr, "deflate large should report Z_STREAM_END\n");	×
72	exit(1);	×
73	}
74	err = PREFIX(deflateEnd)(&c_stream);	2,450✔
75	CHECK_ERR(err, "deflateEnd");	2,450✔
76	}	2,450✔
77
78	/* ===========================================================================
79	* Test inflate() with large buffers
80	*/
81	void test_large_inflate(unsigned char compr, size_t comprLen, unsigned char uncompr, size_t uncomprLen) {	2,450✔
82	int err;	728✔
83	PREFIX3(stream) d_stream; /* decompression stream */	728✔
84
85	d_stream.zalloc = zalloc;	2,450✔
86	d_stream.zfree = zfree;	2,450✔
87	d_stream.opaque = (void *)0;	2,450✔
88
89	d_stream.next_in = compr;	2,450✔
90	d_stream.avail_in = (unsigned int)comprLen;	2,450✔
91
92	err = PREFIX(inflateInit)(&d_stream);	2,450✔
93	CHECK_ERR(err, "inflateInit");	2,450✔
94
95	for (;;) {	2,184✔
96	d_stream.next_out = uncompr; /* discard the output */	7,350✔
97	d_stream.avail_out = (unsigned int)uncomprLen;	7,350✔
98	err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);	7,350✔
99	if (err == Z_STREAM_END)	7,350✔
100	break;	182✔
101	CHECK_ERR(err, "large inflate");	4,900✔
102	}
103
104	err = PREFIX(inflateEnd)(&d_stream);	2,450✔
105	CHECK_ERR(err, "inflateEnd");	2,450✔
106
107	if (d_stream.total_out != 2 * uncomprLen + diff) {	2,450✔
108	fprintf(stderr, "bad large inflate: %" PRIu64 "\n", (uint64_t)d_stream.total_out);	×
UNCOV 109	exit(1);	×
110	}
111	}	2,450✔
112
113	int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) {	2,484✔
114	size_t comprLen = 100 + 3 * size;	2,484✔
115	size_t uncomprLen = comprLen;	736✔
116	uint8_t compr, uncompr;	736✔
117
118	/* Discard inputs larger than 512Kb. */
119	static size_t kMaxSize = 512 * 1024;	552✔
120
121	if (size < 1 \|\| size > kMaxSize)	2,484✔
122	return 0;	2✔
123
124	data = d;	2,450✔
125	dataLen = size;	2,450✔
126	compr = (uint8_t *)calloc(1, comprLen);	2,450✔
127	uncompr = (uint8_t *)calloc(1, uncomprLen);	2,450✔
128
129	test_large_deflate(compr, comprLen, uncompr, uncomprLen);	2,450✔
130	test_large_inflate(compr, comprLen, uncompr, uncomprLen);	2,450✔
131
132	free(compr);	2,450✔
133	free(uncompr);	2,450✔
134
135	/* This function must return 0. */
136	return 0;	2,450✔
137	}	184✔

zlib-ng / zlib-ng / 22071119879

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