mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-22 14:55:26 +00:00
42 lines
1.7 KiB
Rust
42 lines
1.7 KiB
Rust
// When native libraries are passed to the linker, there used to be an annoyance
|
|
// where multiple instances of the same library in a row would cause duplication in
|
|
// outputs. This has been fixed, and this test checks that it stays fixed.
|
|
// With the --cfg flag, -ltestb gets added to the output, breaking up the chain of -ltesta.
|
|
// Without the --cfg flag, there should be a single -ltesta, no more, no less.
|
|
// See https://github.com/rust-lang/rust/pull/84794
|
|
|
|
use std::fmt::Write;
|
|
|
|
use run_make_support::{is_msvc, rustc};
|
|
|
|
fn main() {
|
|
rustc().input("depa.rs").run();
|
|
rustc().input("depb.rs").run();
|
|
rustc().input("depc.rs").run();
|
|
|
|
let output = rustc().input("empty.rs").cfg("bar").run_fail();
|
|
output.assert_stderr_contains(needle_from_libs(&["testa", "testb", "testa"]));
|
|
|
|
let output = rustc().input("empty.rs").run_fail();
|
|
output.assert_stderr_contains(needle_from_libs(&["testa"]));
|
|
output.assert_stderr_not_contains(needle_from_libs(&["testb"]));
|
|
output.assert_stderr_not_contains(needle_from_libs(&["testa", "testa", "testa"]));
|
|
// Adjacent identical native libraries are no longer deduplicated if
|
|
// they come from different crates (https://github.com/rust-lang/rust/pull/103311)
|
|
// so the following will fail:
|
|
//output.assert_stderr_not_contains(needle_from_libs(&["testa", "testa"]));
|
|
}
|
|
|
|
fn needle_from_libs(libs: &[&str]) -> String {
|
|
let mut needle = String::new();
|
|
for lib in libs {
|
|
if is_msvc() {
|
|
let _ = needle.write_fmt(format_args!(r#""{lib}.lib" "#));
|
|
} else {
|
|
let _ = needle.write_fmt(format_args!(r#""-l{lib}" "#));
|
|
}
|
|
}
|
|
needle.pop(); // remove trailing space
|
|
needle
|
|
}
|