lib/zstd
1
0
Fork 0
mirror of https://github.com/facebook/zstd.git synced 2025-07-29 11:21:22 +03:00
Code Activity

[lib] Add ZSTD_c_deterministicRefPrefix

Browse Source 
This flag forces zstd to always load the prefix in ext-dict mode, even
if it happens to be contiguous, to force determinism. It also applies to
dictionaries that are re-processed.

A determinism test case is also added, which fails without
`ZSTD_c_deterministicRefPrefix` and passes with it set.

Question: Should this be the default behavior? It isn't in this PR.
This commit is contained in:
Nick Terrell
2021-05-05 12:18:47 -07:00
parent 2d10544b84
commit 172b4b6ac4
7 changed files with 109 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
tests/zstreamtest.c
View File

@ -2215,6 +2215,7 @@ static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest,
}
if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_forceMaxWindow, FUZ_rand(&lseed) & 1, opaqueAPI) );
if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_deterministicRefPrefix, FUZ_rand(&lseed) & 1, opaqueAPI) );
/* Apply parameters */
if (opaqueAPI) {