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Fix #1861: Restrict overlapLog Parameter When Not Built With Multithreading

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This parameter is unused in single-threaded compression. We should make it
behave like the other multithread-only parameters, for which we only accept
zero when we are not built with multithreading.
This commit is contained in:
W. Felix Handte 2019-11-06 16:05:02 -05:00
parent 73f8905b83
commit c13f81905a
1 changed files with 5 additions and 0 deletions
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5
lib/compress/zstd_compress.c
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@ -339,8 +339,13 @@ ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter param)
return bounds; return bounds;
case ZSTD_c_overlapLog: case ZSTD_c_overlapLog:
#ifdef ZSTD_MULTITHREAD
bounds.lowerBound = ZSTD_OVERLAPLOG_MIN; bounds.lowerBound = ZSTD_OVERLAPLOG_MIN;
bounds.upperBound = ZSTD_OVERLAPLOG_MAX; bounds.upperBound = ZSTD_OVERLAPLOG_MAX;
#else
bounds.lowerBound = 0;
bounds.upperBound = 0;
#endif
return bounds; return bounds;
case ZSTD_c_enableLongDistanceMatching: case ZSTD_c_enableLongDistanceMatching: