zstd/compress/zstd_compress_internal.h

1097  * The value lies within context's referential, it can be directly compared to blockEndIdx.
1117     U32 const blockEndIdx = (U32)((BYTE const*)blockEnd - window->base);
1119     DEBUGLOG(5, "ZSTD_window_enforceMaxDist: blockEndIdx=%u, maxDist=%u, loadedDictEnd=%u",
1120                 (unsigned)blockEndIdx, (unsigned)maxDist, (unsigned)loadedDictEnd);
1123          In which case, the test (blockEndIdx > maxDist) is merely to avoid
1124          overflowing next operation `newLowLimit = blockEndIdx - maxDist`.
1129          and it makes sense to compare `blockEndIdx > maxDist + dictSize`
1130          since `blockEndIdx` also starts from zero.
1133          so it can be directly compared against blockEndIdx.
1135     if (blockEndIdx > maxDist + loadedDictEnd) {
1136         U32 const newLowLimit = blockEndIdx - maxDist;
1164     {   U32 const blockEndIdx = (U32)((BYTE const*)blockEnd - window->base);
1166         DEBUGLOG(5, "ZSTD_checkDictValidity: blockEndIdx=%u, maxDist=%u, loadedDictEnd=%u",
1167                     (unsigned)blockEndIdx, (unsigned)maxDist, (unsigned)loadedDictEnd);
1168         assert(blockEndIdx >= loadedDictEnd);
1170         if (blockEndIdx > loadedDictEnd + maxDist) {