diff options
| -rw-r--r-- | archival/libarchive/bz/compress.c | 44 |
1 files changed, 13 insertions, 31 deletions
diff --git a/archival/libarchive/bz/compress.c b/archival/libarchive/bz/compress.c index 0d083486b..6260fd94c 100644 --- a/archival/libarchive/bz/compress.c +++ b/archival/libarchive/bz/compress.c @@ -162,7 +162,7 @@ static NOINLINE void generateMTFValues(EState* s) { uint8_t yy[256]; - int32_t i, j; + int i; int zPend; int32_t wr; int32_t EOB; @@ -195,16 +195,18 @@ void generateMTFValues(EState* s) makeMaps_e(s); EOB = s->nInUse+1; + wr = 0; + zPend = 0; for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0; - wr = 0; - zPend = 0; for (i = 0; i < s->nInUse; i++) yy[i] = (uint8_t) i; for (i = 0; i < s->nblock; i++) { - uint8_t ll_i; + uint8_t ll_i = ll_i; /* gcc 4.3.1 thinks it may be used w/o init */ + int32_t j; + AssertD(wr <= i, "generateMTFValues(1)"); j = ptr[i] - 1; if (j < 0) @@ -216,6 +218,7 @@ void generateMTFValues(EState* s) zPend++; } else { if (zPend > 0) { + process_zPend: zPend--; while (1) { #if 0 @@ -238,6 +241,8 @@ void generateMTFValues(EState* s) zPend = (unsigned)zPend / 2; /* bbox: unsigned div is easier */ } + if (i < 0) /* came via "goto process_zPend"? exit */ + goto end; zPend = 0; } { @@ -264,33 +269,10 @@ void generateMTFValues(EState* s) } } - if (zPend > 0) { - zPend--; - while (1) { -#if 0 - if (zPend & 1) { - mtfv[wr] = BZ_RUNB; - wr++; - s->mtfFreq[BZ_RUNB]++; - } else { - mtfv[wr] = BZ_RUNA; - wr++; - s->mtfFreq[BZ_RUNA]++; - } -#else /* same as above, since BZ_RUNA is 0 and BZ_RUNB is 1 */ - unsigned run = zPend & 1; - mtfv[wr] = run; - wr++; - s->mtfFreq[run]++; -#endif - zPend -= 2; - if (zPend < 0) - break; - zPend = (unsigned)zPend / 2; - /* bbox: unsigned div is easier */ - } - } - + i = -1; + if (zPend > 0) + goto process_zPend; /* "process it and come back here" */ + end: mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++; |