SGX target: simplify usercall internals

[rust.git] / src / libstd / sys / sgx / abi / usercalls / mod.rs

diff --git a/src/libstd/sys/sgx/abi/usercalls/mod.rs b/src/libstd/sys/sgx/abi/usercalls/mod.rs
index 58903761ebe400450c19c8f006c6bc18b9aa0e68..511d6e9e9273ab870cfbf9ca839438b49c9830a4 100644 (file)
--- a/src/libstd/sys/sgx/abi/usercalls/mod.rs
+++ b/src/libstd/sys/sgx/abi/usercalls/mod.rs
@@ -22,7 +22,8 @@ pub fn read(fd: Fd, buf: &mut [u8]) -> IoResult<usize> {
 #[unstable(feature = "sgx_platform", issue = "56975")]
 pub fn read_alloc(fd: Fd) -> IoResult<Vec<u8>> {
     unsafe {
-        let mut userbuf = alloc::User::<ByteBuffer>::uninitialized();
+        let userbuf = ByteBuffer { data: ::ptr::null_mut(), len: 0 };
+        let mut userbuf = alloc::User::new_from_enclave(&userbuf);
         raw::read_alloc(fd, userbuf.as_raw_mut_ptr()).from_sgx_result()?;
         Ok(userbuf.copy_user_buffer())
     }