1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
use run_make_support::{Rustc, diff, regex, rustc};
fn run_rustc() -> Rustc {
let mut rustc = rustc();
rustc
.arg("main.rs")
// NOTE: `link-self-contained` can vary depending on bootstrap.toml.
// Make sure we use a consistent value.
.arg("-Clink-self-contained=-linker")
.arg("-Zunstable-options")
.arg("-Wlinker-messages")
.output("main")
.linker("./fake-linker");
if run_make_support::target() == "x86_64-unknown-linux-gnu" {
// The value of `rust.lld` is different between CI and locally. Override it explicitly.
rustc.arg("-Clinker-flavor=gnu-cc");
}
rustc
}
fn main() {
// first, compile our linker
rustc().arg("fake-linker.rs").output("fake-linker").run();
// Run rustc with our fake linker, and make sure it shows warnings
let warnings = run_rustc().link_arg("run_make_warn").run();
warnings.assert_stderr_contains("warning: linker stderr: bar");
// Make sure it shows stdout
run_rustc()
.link_arg("run_make_info")
.run()
.assert_stderr_contains("warning: linker stdout: foo");
// Make sure we short-circuit this new path if the linker exits with an error
// (so the diagnostic is less verbose)
run_rustc().link_arg("run_make_error").run_fail().assert_stderr_contains("note: error: baz");
// Make sure we don't show the linker args unless `--verbose` is passed
let out = run_rustc().link_arg("run_make_error").verbose().run_fail();
out.assert_stderr_contains_regex("fake-linker.*run_make_error")
.assert_stderr_not_contains("object files omitted")
.assert_stderr_contains(r".rcgu.o")
.assert_stderr_contains_regex(r"lib(/|\\\\)libstd");
let out = run_rustc().link_arg("run_make_error").run_fail();
out.assert_stderr_contains("fake-linker")
.assert_stderr_contains("object files omitted")
.assert_stderr_contains_regex(r"\{")
.assert_stderr_not_contains(r".rcgu.o")
.assert_stderr_not_contains_regex(r"lib(/|\\\\)libstd");
// FIXME: we should have a version of this for mac and windows
if run_make_support::target() == "x86_64-unknown-linux-gnu" {
diff()
.expected_file("short-error.txt")
.actual_text("(linker error)", out.stderr())
.normalize(r#"/rustc[^/_-]*/"#, "/rustc/")
.normalize("libpanic_abort", "libpanic_unwind")
.normalize(
regex::escape(run_make_support::build_root().to_str().unwrap()),
"/build-root",
)
.normalize(r#""[^"]*\/symbols.o""#, "\"/symbols.o\"")
.normalize(r#""[^"]*\/raw-dylibs""#, "\"/raw-dylibs\"")
.run();
}
// Make sure we show linker warnings even across `-Z no-link`
rustc()
.arg("-Zno-link")
.input("-")
.stdin_buf("#![deny(linker_messages)] \n fn main() {}")
.run()
.assert_stderr_equals("");
rustc()
.arg("-Zlink-only")
.arg("rust_out.rlink")
.linker("./fake-linker")
.link_arg("run_make_warn")
.run_fail()
// NOTE: the error message here is quite bad (we don't have a source
// span, but still try to print the lint source). But `-Z link-only` is
// unstable and this still shows the linker warning itself so this is
// probably good enough.
.assert_stderr_contains("linker stderr: bar");
// Same thing, but with json output.
rustc()
.error_format("json")
.arg("-Zlink-only")
.arg("rust_out.rlink")
.linker("./fake-linker")
.link_arg("run_make_warn")
.run_fail()
.assert_stderr_contains(r#""$message_type":"diagnostic""#);
}
|
