> + const size_t wksp_size = ZSTD_estimateCCtxSize(ZSTD_DEF_LEVEL); > + > + if (ZSTD_isError(wksp_size)) { > + ret = -EINVAL; > + goto out_free; > + } Pleas switch to properly named functions when you touch this. The API names here look like a cat threw up on the keyboard.