ddidderr/zstd-rs
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[libzstd] Fix estimate with negative levels

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* Fix `ZSTD_estimateCCtxSize()` with negative levels.
* Fix `ZSTD_estimateCStreamSize()` with negative levels.
* Add a unit test to test for this error.
This commit is contained in:
Nick Terrell
2018-12-18 14:24:49 -08:00
parent 517d8c984c
commit d7def456d8
2 changed files with 13 additions and 2 deletions
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lib/compress/zstd_compress.c
+2 -2
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@@ -1013,7 +1013,7 @@ size_t ZSTD_estimateCCtxSize(int compressionLevel)
{
int level;
size_t memBudget = 0;
for (level=1; level<=compressionLevel; level++) {
for (level=MIN(compressionLevel, 1); level<=compressionLevel; level++) {
size_t const newMB = ZSTD_estimateCCtxSize_internal(level);
if (newMB > memBudget) memBudget = newMB;
}
@@ -1049,7 +1049,7 @@ size_t ZSTD_estimateCStreamSize(int compressionLevel)
{
int level;
size_t memBudget = 0;
for (level=1; level<=compressionLevel; level++) {
for (level=MIN(compressionLevel, 1); level<=compressionLevel; level++) {
size_t const newMB = ZSTD_estimateCStreamSize_internal(level);
if (newMB > memBudget) memBudget = newMB;
}