Merge pull request #1549 from terrelln/ref-cdict-free

[libzstd] Free local cdict when referencing cdict
2019-03-13 16:08:54 -07:00
parent 13cc7c610e 0594e8135b
commit ea3b81f02c
1 changed files with 3 additions and 0 deletions
@@ -839,6 +839,9 @@ ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, s
 size_t ZSTD_CCtx_refCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict)
 {
    RETURN_ERROR_IF(cctx->streamStage != zcss_init, stage_wrong);
+    /* Free the existing local cdict (if any) to save memory. */
+    FORWARD_IF_ERROR( ZSTD_freeCDict(cctx->cdictLocal) );
+    cctx->cdictLocal = NULL;
    cctx->cdict = cdict;
    memset(&cctx->prefixDict, 0, sizeof(cctx->prefixDict));  /* exclusive */
    return 0;