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Import zlib-1.2.3 library

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zlib/ChangeLog:
  Import zlib-1.2.3
zlib/FAQ:
  Import zlib-1.2.3
zlib/README:
  Import zlib-1.2.3
zlib/adler32.c:
  Import zlib-1.2.3
zlib/compress.c:
  Import zlib-1.2.3
zlib/crc32.c:
  Import zlib-1.2.3
zlib/deflate.c:
  Import zlib-1.2.3
zlib/deflate.h:
  Import zlib-1.2.3
zlib/gzio.c:
  Import zlib-1.2.3
zlib/infback.c:
  Import zlib-1.2.3
zlib/inffast.c:
  Import zlib-1.2.3
zlib/inflate.c:
  Import zlib-1.2.3
zlib/inflate.h:
  Import zlib-1.2.3
zlib/inftrees.c:
  Import zlib-1.2.3
zlib/inftrees.h:
  Import zlib-1.2.3
zlib/trees.c:
  Import zlib-1.2.3
zlib/zconf.h:
  Import zlib-1.2.3
zlib/zlib.3:
  Import zlib-1.2.3
zlib/zlib.h:
  Import zlib-1.2.3
zlib/zutil.c:
  Import zlib-1.2.3
zlib/zutil.h:
  Import zlib-1.2.3
zlib/README.MySQL:
  Import zlib-1.2.3
This commit is contained in:
unknown 2005-08-09 10:22:48 -07:00
commit c0941e4278
22 changed files with 1008 additions and 213 deletions
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13
zlib/inffast.c
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@ -74,6 +74,9 @@ unsigned start; /* inflate()'s starting value for strm->avail_out */
unsigned char FAR *out; /* local strm->next_out */
unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
unsigned char FAR *end; /* while out < end, enough space available */
#ifdef INFLATE_STRICT
unsigned dmax; /* maximum distance from zlib header */
#endif
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
unsigned write; /* window write index */
@ -98,6 +101,9 @@ unsigned start; /* inflate()'s starting value for strm->avail_out */
out = strm->next_out - OFF;
beg = out - (start - strm->avail_out);
end = out + (strm->avail_out - 257);
#ifdef INFLATE_STRICT
dmax = state->dmax;
#endif
wsize = state->wsize;
whave = state->whave;
write = state->write;
@ -167,6 +173,13 @@ unsigned start; /* inflate()'s starting value for strm->avail_out */
}
}
dist += (unsigned)hold & ((1U << op) - 1);
#ifdef INFLATE_STRICT
if (dist > dmax) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#endif
hold >>= op;
bits -= op;
Tracevv((stderr, "inflate: distance %u\n", dist));