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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:43 +0000 |
commit | 3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245 (patch) | |
tree | daf049b282ab10e8c3d03e409b3cd84ff3f7690c /tests/ui-fulldeps/std/switch-stdout.rs | |
parent | Adding debian version 1.68.2+dfsg1-1. (diff) | |
download | rustc-3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245.tar.xz rustc-3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245.zip |
Merging upstream version 1.69.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui-fulldeps/std/switch-stdout.rs')
-rw-r--r-- | tests/ui-fulldeps/std/switch-stdout.rs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui-fulldeps/std/switch-stdout.rs b/tests/ui-fulldeps/std/switch-stdout.rs new file mode 100644 index 000000000..e9501a809 --- /dev/null +++ b/tests/ui-fulldeps/std/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"); +} |