Fix test

Author: tiif

tests/fail-dep/libc/libc_eventfd_write_block.rs

@@ -7,20 +7,20 @@ fn main() {
     let flags = libc::EFD_CLOEXEC;
     let fd = unsafe { libc::eventfd(0, flags) };
     let mut sized_8_data: [u8; 8];
+
+    // Write u64 - 1.
     if cfg!(target_endian = "big") {
         // Adjust the data based on the endianness of host system.
         sized_8_data = [255, 255, 255, 255, 255, 255, 255, 254];
     } else {
         sized_8_data = [254, 255, 255, 255, 255, 255, 255, 255];
     }
-    // Write u64 - 1.
-    let _res: i64 = unsafe {
+    let res: i64 = unsafe {
         libc::write(fd, sized_8_data.as_ptr() as *const libc::c_void, 8).try_into().unwrap()
     };
-    // Write u64 - 1.
-    let _res: i64 = unsafe {
-        libc::write(fd, sized_8_data.as_ptr() as *const libc::c_void, 8).try_into().unwrap() //~ERROR: blocking is unsupported
-    };
+    assert_eq!(res, 8);
+
+    // Write 1.
     if cfg!(target_endian = "big") {
         // Adjust the data based on the endianess of host system.
         sized_8_data = [0, 0, 0, 0, 0, 0, 0, 1];
@@ -29,6 +29,6 @@ fn main() {
     }
     // Write 1 to the counter.
     let _res: i64 = unsafe {
-        libc::write(fd, sized_8_data.as_ptr() as *const libc::c_void, 8).try_into().unwrap()
+        libc::write(fd, sized_8_data.as_ptr() as *const libc::c_void, 8).try_into().unwrap() //~ERROR: blocking is unsupported
     };
 }