2 // ignore-android FIXME #17520
3 // ignore-emscripten spawning processes is not supported
4 // ignore-openbsd no support for libbacktrace without filename
5 // ignore-sgx no processes
6 // ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
10 use std::process::{Command, Stdio};
15 let _v = vec![1, 2, 3];
16 if env::var_os("IS_TEST").is_some() {
25 impl Drop for Double {
26 fn drop(&mut self) { panic!("twice") }
34 fn template(me: &str) -> Command {
35 let mut m = Command::new(me);
37 .stdout(Stdio::piped())
38 .stderr(Stdio::piped());
42 fn expected(fn_name: &str) -> String {
43 format!(" backtrace::{}", fn_name)
46 fn contains_verbose_expected(s: &str, fn_name: &str) -> bool {
47 // HACK(eddyb) work around the fact that verbosely demangled stack traces
48 // (from `RUST_BACKTRACE=full`, or, as is the case here, panic-in-panic)
49 // may contain symbols with hashes in them, i.e. `backtrace[...]::`.
50 let prefix = " backtrace";
51 let suffix = &format!("::{}", fn_name);
52 s.match_indices(prefix).any(|(i, _)| {
54 .trim_start_matches('[')
55 .trim_start_matches(char::is_alphanumeric)
56 .trim_start_matches(']')
61 fn runtest(me: &str) {
62 // Make sure that the stack trace is printed
63 let p = template(me).arg("fail").env("RUST_BACKTRACE", "1").spawn().unwrap();
64 let out = p.wait_with_output().unwrap();
65 assert!(!out.status.success());
66 let s = str::from_utf8(&out.stderr).unwrap();
67 assert!(s.contains("stack backtrace") && s.contains(&expected("foo")),
69 assert!(s.contains(" 0:"), "the frame number should start at 0");
71 // Make sure the stack trace is *not* printed
72 // (Remove RUST_BACKTRACE from our own environment, in case developer
73 // is running `make check` with it on.)
74 let p = template(me).arg("fail").env_remove("RUST_BACKTRACE").spawn().unwrap();
75 let out = p.wait_with_output().unwrap();
76 assert!(!out.status.success());
77 let s = str::from_utf8(&out.stderr).unwrap();
78 assert!(!s.contains("stack backtrace") && !s.contains(&expected("foo")),
79 "bad output2: {}", s);
81 // Make sure the stack trace is *not* printed
82 // (RUST_BACKTRACE=0 acts as if it were unset from our own environment,
83 // in case developer is running `make check` with it set.)
84 let p = template(me).arg("fail").env("RUST_BACKTRACE","0").spawn().unwrap();
85 let out = p.wait_with_output().unwrap();
86 assert!(!out.status.success());
87 let s = str::from_utf8(&out.stderr).unwrap();
88 assert!(!s.contains("stack backtrace") && !s.contains(" - foo"),
89 "bad output3: {}", s);
91 #[cfg(not(panic = "abort"))]
93 // Make sure a stack trace is printed
94 let p = template(me).arg("double-fail").spawn().unwrap();
95 let out = p.wait_with_output().unwrap();
96 assert!(!out.status.success());
97 let s = str::from_utf8(&out.stderr).unwrap();
98 // loosened the following from double::h to double:: due to
99 // spurious failures on mac, 32bit, optimized
100 assert!(s.contains("stack backtrace") && contains_verbose_expected(s, "double"),
101 "bad output3: {}", s);
103 // Make sure a stack trace isn't printed too many times
104 let p = template(me).arg("double-fail")
105 .env("RUST_BACKTRACE", "1").spawn().unwrap();
106 let out = p.wait_with_output().unwrap();
107 assert!(!out.status.success());
108 let s = str::from_utf8(&out.stderr).unwrap();
111 i += s[i + 10..].find("stack backtrace").unwrap() + 10;
113 assert!(s[i + 10..].find("stack backtrace").is_none(),
114 "bad output4: {}", s);
119 let args: Vec<String> = env::args().collect();
120 if args.len() >= 2 && args[1] == "fail" {
122 } else if args.len() >= 2 && args[1] == "double-fail" {