ddidderr/zstd-rs
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[zstdmt] Fix bug where extra empty blocks are emitted

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When zstdmt cannot get a buffer and `ZSTD_e_end` is passed an empty
compression job can be created. Additionally, `mtctx->frameEnded` can be
set to 1, which could potentially cause problems like unterminated blocks.

The fix is to adjust to `ZSTD_e_flush` even when we can't get a buffer.
This commit is contained in:
Nick Terrell
2020-10-12 12:55:17 -07:00
parent 9ab9229e11
commit ede4f97153
2 changed files with 15 additions and 3 deletions
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tests/zstreamtest.c
+5 -1
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@@ -2048,7 +2048,11 @@ static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest,
}
}
/* Enable rsyncable mode 1 in 4 times. */
setCCtxParameter(zc, cctxParams, ZSTD_c_rsyncable, (FUZ_rand(&lseed) % 4 == 0), opaqueAPI);
{
int const rsyncable = (FUZ_rand(&lseed) % 4 == 0);
DISPLAYLEVEL(5, "t%u: rsyncable : %d \n", testNb, rsyncable);
setCCtxParameter(zc, cctxParams, ZSTD_c_rsyncable, rsyncable, opaqueAPI);
}
if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_forceMaxWindow, FUZ_rand(&lseed) & 1, opaqueAPI) );