From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui-fulldeps/switch-stdout.rs | 51 +++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 src/test/ui-fulldeps/switch-stdout.rs (limited to 'src/test/ui-fulldeps/switch-stdout.rs') diff --git a/src/test/ui-fulldeps/switch-stdout.rs b/src/test/ui-fulldeps/switch-stdout.rs new file mode 100644 index 000000000..e9501a809 --- /dev/null +++ b/src/test/ui-fulldeps/switch-stdout.rs @@ -0,0 +1,51 @@ +// run-pass + +use std::env; +use std::fs::File; +use std::io::{Read, Write}; +use std::path::PathBuf; + +#[cfg(unix)] +fn switch_stdout_to(file: File) { + use std::os::unix::prelude::*; + + extern "C" { + fn dup2(old: i32, new: i32) -> i32; + } + + unsafe { + assert_eq!(dup2(file.as_raw_fd(), 1), 1); + } +} + +#[cfg(windows)] +fn switch_stdout_to(file: File) { + use std::os::windows::prelude::*; + + extern "system" { + fn SetStdHandle(nStdHandle: u32, handle: *mut u8) -> i32; + } + + const STD_OUTPUT_HANDLE: u32 = (-11i32) as u32; + + unsafe { + let rc = SetStdHandle(STD_OUTPUT_HANDLE, file.into_raw_handle() as *mut _); + assert!(rc != 0); + } +} + +fn main() { + let path = PathBuf::from(env::var_os("RUST_TEST_TMPDIR").unwrap()); + let path = path.join("switch-stdout-output"); + let f = File::create(&path).unwrap(); + + println!("foo"); + std::io::stdout().flush().unwrap(); + switch_stdout_to(f); + println!("bar"); + std::io::stdout().flush().unwrap(); + + let mut contents = String::new(); + File::open(&path).unwrap().read_to_string(&mut contents).unwrap(); + assert_eq!(contents, "bar\n"); +} -- cgit v1.2.3