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Diffstat (limited to 'src/Common/zlib/deflate.c')
-rw-r--r--src/Common/zlib/deflate.c47
1 files changed, 36 insertions, 11 deletions
diff --git a/src/Common/zlib/deflate.c b/src/Common/zlib/deflate.c
index bd011751..012ea814 100644
--- a/src/Common/zlib/deflate.c
+++ b/src/Common/zlib/deflate.c
@@ -1,5 +1,5 @@
/* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2023 Jean-loup Gailly and Mark Adler
+ * Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -52,7 +52,7 @@
#include "deflate.h"
const char deflate_copyright[] =
- " deflate 1.3 Copyright 1995-2023 Jean-loup Gailly and Mark Adler ";
+ " deflate 1.3.1 Copyright 1995-2024 Jean-loup Gailly and Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
@@ -493,7 +493,7 @@ int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
* symbols from which it is being constructed.
*/
- s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, 4);
+ s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, LIT_BUFS);
s->pending_buf_size = (ulg)s->lit_bufsize * 4;
if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
@@ -503,8 +503,14 @@ int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
deflateEnd (strm);
return Z_MEM_ERROR;
}
+#ifdef LIT_MEM
+ s->d_buf = (ushf *)(s->pending_buf + (s->lit_bufsize << 1));
+ s->l_buf = s->pending_buf + (s->lit_bufsize << 2);
+ s->sym_end = s->lit_bufsize - 1;
+#else
s->sym_buf = s->pending_buf + s->lit_bufsize;
s->sym_end = (s->lit_bufsize - 1) * 3;
+#endif
/* We avoid equality with lit_bufsize*3 because of wraparound at 64K
* on 16 bit machines and because stored blocks are restricted to
* 64K-1 bytes.
@@ -720,9 +726,15 @@ int ZEXPORT deflatePrime(z_streamp strm, int bits, int value) {
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
s = strm->state;
+#ifdef LIT_MEM
+ if (bits < 0 || bits > 16 ||
+ (uchf *)s->d_buf < s->pending_out + ((Buf_size + 7) >> 3))
+ return Z_BUF_ERROR;
+#else
if (bits < 0 || bits > 16 ||
s->sym_buf < s->pending_out + ((Buf_size + 7) >> 3))
return Z_BUF_ERROR;
+#endif
do {
put = Buf_size - s->bi_valid;
if (put > bits)
@@ -1294,7 +1306,7 @@ int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));
ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));
- ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, 4);
+ ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, LIT_BUFS);
if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
ds->pending_buf == Z_NULL) {
@@ -1305,10 +1317,15 @@ int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
- zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
+ zmemcpy(ds->pending_buf, ss->pending_buf, ds->lit_bufsize * LIT_BUFS);
ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
+#ifdef LIT_MEM
+ ds->d_buf = (ushf *)(ds->pending_buf + (ds->lit_bufsize << 1));
+ ds->l_buf = ds->pending_buf + (ds->lit_bufsize << 2);
+#else
ds->sym_buf = ds->pending_buf + ds->lit_bufsize;
+#endif
ds->l_desc.dyn_tree = ds->dyn_ltree;
ds->d_desc.dyn_tree = ds->dyn_dtree;
@@ -1539,13 +1556,21 @@ local uInt longest_match(deflate_state *s, IPos cur_match) {
*/
local void check_match(deflate_state *s, IPos start, IPos match, int length) {
/* check that the match is indeed a match */
- if (zmemcmp(s->window + match,
- s->window + start, length) != EQUAL) {
- fprintf(stderr, " start %u, match %u, length %d\n",
- start, match, length);
+ Bytef *back = s->window + (int)match, *here = s->window + start;
+ IPos len = length;
+ if (match == (IPos)-1) {
+ /* match starts one byte before the current window -- just compare the
+ subsequent length-1 bytes */
+ back++;
+ here++;
+ len--;
+ }
+ if (zmemcmp(back, here, len) != EQUAL) {
+ fprintf(stderr, " start %u, match %d, length %d\n",
+ start, (int)match, length);
do {
- fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
- } while (--length != 0);
+ fprintf(stderr, "(%02x %02x)", *back++, *here++);
+ } while (--len != 0);
z_error("invalid match");
}
if (z_verbose > 1) {