Re: [PATCH 1/2] libtraceevent utest: Handle short reads when reading BTF

[Steven Rostedt <rostedt@goodmis.org>]

On Mon,  1 Jun 2026 18:37:49 +0800
Cao Ruichuang <create0818@163.com> wrote:

> @@ -532,7 +557,13 @@ static void test_btf_read(void)
>  			close(fd);
>  			return;
>  		}
> -		CU_TEST(read(fd, buf, st.st_size) == st.st_size);
> +		ret = read_full(fd, buf, st.st_size);
> +		CU_TEST(ret == 0);

Nit, can you change this to:

		CU_TEST((ret = read_full(fd, buf, st.st_size)) == 0);

so that if it fails, it doesn't just report "ret == 0" in the failure.

I'm working to make the CU_TEST() more informative on failures.

Thanks,

-- Steve


> +		if (ret < 0) {
> +			free(buf);
> +			close(fd);
> +			return;
> +		}
>  	}