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(zlib) Backport 60a5ecc62b (diff-e17b59778d9aff01f3b9b23f56d76d48)

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twinaphex 2020-07-03 19:21:45 +02:00
parent b1d82f1b27
commit da9a0786f7
1 changed files with 12 additions and 12 deletions
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24
deps/libz/inffast.c vendored
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@ -47,7 +47,7 @@ output space.
*/ */
void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start)
{ {
code here; /* retrieved table entry */ code const *here; /* retrieved table entry */
unsigned op; /* code bits, operation, extra bits, or */ unsigned op; /* code bits, operation, extra bits, or */
/* window position, window bytes to copy */ /* window position, window bytes to copy */
unsigned len; /* match length, unused bytes */ unsigned len; /* match length, unused bytes */
@ -83,17 +83,17 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start)
hold += (unsigned long)(*in++) << bits; hold += (unsigned long)(*in++) << bits;
bits += 8; bits += 8;
} }
here = lcode[hold & lmask]; here = lcode + (hold & lmask);
dolen: dolen:
op = (unsigned)(here.bits); op = (unsigned)(here->bits);
hold >>= op; hold >>= op;
bits -= op; bits -= op;
op = (unsigned)(here.op); op = (unsigned)(here->op);
if (op == 0) /* literal */ if (op == 0) /* literal */
*out++ = (unsigned char)(here.val); *out++ = (unsigned char)(here->val);
else if (op & 16) /* length base */ else if (op & 16) /* length base */
{ {
len = (unsigned)(here.val); len = (unsigned)(here->val);
op &= 15; /* number of extra bits */ op &= 15; /* number of extra bits */
if (op) if (op)
{ {
@ -115,16 +115,16 @@ dolen:
bits += 8; bits += 8;
} }
here = dcode[hold & dmask]; here = dcode + (hold & dmask);
dodist: dodist:
op = (unsigned)(here.bits); op = (unsigned)(here->bits);
hold >>= op; hold >>= op;
bits -= op; bits -= op;
op = (unsigned)(here.op); op = (unsigned)(here->op);
if (op & 16) /* distance base */ if (op & 16) /* distance base */
{ {
dist = (unsigned)(here.val); dist = (unsigned)(here->val);
op &= 15; /* number of extra bits */ op &= 15; /* number of extra bits */
if (bits < op) if (bits < op)
{ {
@ -236,7 +236,7 @@ dodist:
} }
else if ((op & 64) == 0) /* 2nd level distance code */ else if ((op & 64) == 0) /* 2nd level distance code */
{ {
here = dcode[here.val + (hold & ((1U << op) - 1))]; here = dcode + here->val + (hold & ((1U << op) - 1));
goto dodist; goto dodist;
} }
else else
@ -248,7 +248,7 @@ dodist:
} }
else if ((op & 64) == 0) /* 2nd level length code */ else if ((op & 64) == 0) /* 2nd level length code */
{ {
here = lcode[here.val + (hold & ((1U << op) - 1))]; here = lcode + here->val + (hold & ((1U << op) - 1));
goto dolen; goto dolen;
} }
else if (op & 32) /* end-of-block */ else if (op & 32) /* end-of-block */