Mercurial > hg > CbC > CbC_gcc
diff zlib/contrib/infback9/inftree9.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | ae3a4bfb450b |
children |
line wrap: on
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--- a/zlib/contrib/infback9/inftree9.c Sun Aug 21 07:07:55 2011 +0900 +++ b/zlib/contrib/infback9/inftree9.c Fri Oct 27 22:46:09 2017 +0900 @@ -1,5 +1,5 @@ /* inftree9.c -- generate Huffman trees for efficient decoding - * Copyright (C) 1995-2005 Mark Adler + * Copyright (C) 1995-2017 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ @@ -9,7 +9,7 @@ #define MAXBITS 15 const char inflate9_copyright[] = - " inflate9 1.2.3 Copyright 1995-2005 Mark Adler "; + " inflate9 1.2.11 Copyright 1995-2017 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 @@ -64,7 +64,7 @@ static const unsigned short lext[31] = { /* Length codes 257..285 extra */ 128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129, 130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132, - 133, 133, 133, 133, 144, 201, 196}; + 133, 133, 133, 133, 144, 77, 202}; static const unsigned short dbase[32] = { /* Distance codes 0..31 base */ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, @@ -160,11 +160,10 @@ entered in the tables. used keeps track of how many table entries have been allocated from the - provided *table space. It is checked when a LENS table is being made - against the space in *table, ENOUGH, minus the maximum space needed by - the worst case distance code, MAXD. This should never happen, but the - sufficiency of ENOUGH has not been proven exhaustively, hence the check. - This assumes that when type == LENS, bits == 9. + provided *table space. It is checked for LENS and DIST tables against + the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in + the initial root table size constants. See the comments in inftree9.h + for more information. sym increments through all symbols, and the loop terminates when all codes of length max, i.e. all codes, have been processed. This @@ -203,7 +202,8 @@ mask = used - 1; /* mask for comparing low */ /* check available table space */ - if (type == LENS && used >= ENOUGH - MAXD) + if ((type == LENS && used >= ENOUGH_LENS) || + (type == DISTS && used >= ENOUGH_DISTS)) return 1; /* process all codes and make table entries */ @@ -270,7 +270,8 @@ /* check for enough space */ used += 1U << curr; - if (type == LENS && used >= ENOUGH - MAXD) + if ((type == LENS && used >= ENOUGH_LENS) || + (type == DISTS && used >= ENOUGH_DISTS)) return 1; /* point entry in root table to sub-table */