diff options
Diffstat (limited to 'tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs')
-rw-r--r-- | tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs b/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs deleted file mode 100644 index 74d7b9b07..000000000 --- a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs +++ /dev/null @@ -1,101 +0,0 @@ -// Like the `long-linker-command-lines` test this test attempts to blow -// a command line limit for running the linker. Unlike that test, however, -// this test is testing `cmd.exe` specifically rather than the OS. -// -// Unfortunately `cmd.exe` has a 8192 limit which is relatively small -// in the grand scheme of things and anyone sripting rustc's linker -// is probably using a `*.bat` script and is likely to hit this limit. -// -// This test uses a `foo.bat` script as the linker which just simply -// delegates back to this program. The compiler should use a lower -// limit for arguments before passing everything via `@`, which -// means that everything should still succeed here. - -use std::env; -use std::fs::{self, File}; -use std::io::{BufWriter, Write, Read}; -use std::path::PathBuf; -use std::process::Command; - -fn main() { - if !cfg!(windows) { - return - } - - let tmpdir = PathBuf::from(env::var_os("OUT_DIR").unwrap()); - let ok = tmpdir.join("ok"); - let not_ok = tmpdir.join("not_ok"); - if env::var("YOU_ARE_A_LINKER").is_ok() { - match env::args_os().find(|a| a.to_string_lossy().contains("@")) { - Some(file) => { - let file = file.to_str().unwrap(); - fs::copy(&file[1..], &ok).unwrap(); - } - None => { File::create(¬_ok).unwrap(); } - } - return - } - - let rustc = env::var_os("RUSTC").unwrap_or("rustc".into()); - let me = env::current_exe().unwrap(); - let bat = me.parent() - .unwrap() - .join("foo.bat"); - let bat_linker = format!("linker={}", bat.display()); - for i in (1..).map(|i| i * 10) { - println!("attempt: {}", i); - - let file = tmpdir.join("bar.rs"); - let mut f = BufWriter::new(File::create(&file).unwrap()); - let mut lib_name = String::new(); - for _ in 0..i { - lib_name.push_str("foo"); - } - for j in 0..i { - writeln!(f, "#[link(name = \"{}{}\")]", lib_name, j).unwrap(); - } - writeln!(f, "extern {{}}\nfn main() {{}}").unwrap(); - f.into_inner().unwrap(); - - drop(fs::remove_file(&ok)); - drop(fs::remove_file(¬_ok)); - let status = Command::new(&rustc) - .arg(&file) - .arg("-C").arg(&bat_linker) - .arg("--out-dir").arg(&tmpdir) - .env("YOU_ARE_A_LINKER", "1") - .env("MY_LINKER", &me) - .status() - .unwrap(); - - if !status.success() { - panic!("rustc didn't succeed: {}", status); - } - - if !ok.exists() { - assert!(not_ok.exists()); - continue - } - - let mut contents = Vec::new(); - File::open(&ok).unwrap().read_to_end(&mut contents).unwrap(); - - for j in 0..i { - let exp = format!("{}{}", lib_name, j); - let exp = if cfg!(target_env = "msvc") { - let mut out = Vec::with_capacity(exp.len() * 2); - for c in exp.encode_utf16() { - // encode in little endian - out.push(c as u8); - out.push((c >> 8) as u8); - } - out - } else { - exp.into_bytes() - }; - assert!(contents.windows(exp.len()).any(|w| w == &exp[..])); - } - - break - } -} |