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Vladimir N. Oleynik (vodz) writes:

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Hi Glenn.

I analysed BSS size gzip applet and found may be mistake:
updcrc() checking  if (crc_table_empty) but not resetted this var.
This do make slow gzip applet ;-)


--w
vodz
This commit is contained in:
Eric Andersen 2003-11-14 02:44:28 +00:00
parent e0c83af4ce
commit 8211db5af0
1 changed files with 1 additions and 4 deletions
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5
archival/gzip.c
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@ -305,8 +305,6 @@ DECLARE(ush, d_buf, DIST_BUFSIZE);
DECLARE(uch, window, 2L * WSIZE); DECLARE(uch, window, 2L * WSIZE);
DECLARE(ush, tab_prefix, 1L << BITS); DECLARE(ush, tab_prefix, 1L << BITS);
static int crc_table_empty = 1;
static int foreground; /* set if program run in foreground */ static int foreground; /* set if program run in foreground */
static int method = DEFLATED; /* compression method */ static int method = DEFLATED; /* compression method */
static int exit_code = OK; /* program exit code */ static int exit_code = OK; /* program exit code */
@ -387,14 +385,13 @@ static ulg updcrc(uch * s, unsigned n)
register ulg c; /* temporary variable */ register ulg c; /* temporary variable */
static unsigned long crc_32_tab[256]; static unsigned long crc_32_tab[256];
if (crc_table_empty) { if (crc_32_tab[1] == 0x00000000L) {
unsigned long csr; /* crc shift register */ unsigned long csr; /* crc shift register */
const unsigned long e = 0xedb88320L; /* polynomial exclusive-or pattern */ const unsigned long e = 0xedb88320L; /* polynomial exclusive-or pattern */
int i; /* counter for all possible eight bit values */ int i; /* counter for all possible eight bit values */
int k; /* byte being shifted into crc apparatus */ int k; /* byte being shifted into crc apparatus */
/* Compute table of CRC's. */ /* Compute table of CRC's. */
crc_32_tab[0] = 0x00000000L;
for (i = 1; i < 256; i++) { for (i = 1; i < 256; i++) {
csr = i; csr = i;
/* The idea to initialize the register with the byte instead of /* The idea to initialize the register with the byte instead of