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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui-fulldeps/switch-stdout.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui-fulldeps/switch-stdout.rs')
-rw-r--r--src/test/ui-fulldeps/switch-stdout.rs51
1 files changed, 51 insertions, 0 deletions
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");
+}