1 extern crate backtrace;
2 extern crate findshlibs;
3 extern crate rustc_test as test;
4
5 use std::env;
6 use std::ffi::OsStr;
7 use std::path::Path;
8 use std::process::Command;
9
10 use backtrace::Backtrace;
11 use findshlibs::{IterationControl, SharedLibrary, TargetSharedLibrary};
12 use test::{ShouldPanic, TestDesc, TestDescAndFn, TestFn, TestName};
13
make_trace() -> Vec<String>14 fn make_trace() -> Vec<String> {
15 fn foo() -> Backtrace {
16 bar()
17 }
18 #[inline(never)]
19 fn bar() -> Backtrace {
20 baz()
21 }
22 #[inline(always)]
23 fn baz() -> Backtrace {
24 Backtrace::new_unresolved()
25 }
26
27 let mut base_addr = None;
28 TargetSharedLibrary::each(|lib| {
29 base_addr = Some(lib.virtual_memory_bias().0 as isize);
30 IterationControl::Break
31 });
32 let addrfix = -base_addr.unwrap();
33
34 let trace = foo();
35 trace
36 .frames()
37 .iter()
38 .take(5)
39 .map(|x| format!("{:p}", (x.ip() as *const u8).wrapping_offset(addrfix)))
40 .collect()
41 }
42
run_cmd<P: AsRef<OsStr>>(exe: P, me: &Path, flags: Option<&str>, trace: &str) -> String43 fn run_cmd<P: AsRef<OsStr>>(exe: P, me: &Path, flags: Option<&str>, trace: &str) -> String {
44 let mut cmd = Command::new(exe);
45 cmd.env("LC_ALL", "C"); // GNU addr2line is localized, we aren't
46 cmd.env("RUST_BACKTRACE", "1"); // if a child crashes, we want to know why
47
48 if let Some(flags) = flags {
49 cmd.arg(flags);
50 }
51 cmd.arg("--exe").arg(me).arg(trace);
52
53 let output = cmd.output().unwrap();
54
55 assert!(output.status.success());
56 String::from_utf8(output.stdout).unwrap()
57 }
58
run_test(flags: Option<&str>)59 fn run_test(flags: Option<&str>) {
60 let me = env::current_exe().unwrap();
61 let mut exe = me.clone();
62 assert!(exe.pop());
63 if exe.file_name().unwrap().to_str().unwrap() == "deps" {
64 assert!(exe.pop());
65 }
66 exe.push("examples");
67 exe.push("addr2line");
68
69 assert!(exe.is_file());
70
71 let trace = make_trace();
72
73 // HACK: GNU addr2line has a bug where looking up multiple addresses can cause the second
74 // lookup to fail. Workaround by doing one address at a time.
75 for addr in &trace {
76 let theirs = run_cmd("addr2line", &me, flags, addr);
77 let ours = run_cmd(&exe, &me, flags, addr);
78
79 // HACK: GNU addr2line does not tidy up paths properly, causing double slashes to be printed
80 // for for inlined frames from /src/libpanic_unwind/lib.rs
81 // We consider our behavior to be correct, so we fix their output to match ours.
82 let theirs = theirs.replace("//src", "/src");
83
84 assert!(
85 theirs == ours,
86 "Output not equivalent:
87
88 $ addr2line {0} --exe {1} {2}
89 {4}
90 $ {3} {0} --exe {1} {2}
91 {5}
92
93
94 ",
95 flags.unwrap_or(""),
96 me.display(),
97 trace.join(" "),
98 exe.display(),
99 theirs,
100 ours
101 );
102 }
103 }
104
105 static FLAGS: &'static str = "aipsf";
106
make_tests() -> Vec<TestDescAndFn>107 fn make_tests() -> Vec<TestDescAndFn> {
108 (0..(1 << FLAGS.len()))
109 .map(|bits| {
110 if bits == 0 {
111 None
112 } else {
113 let mut param = String::new();
114 param.push('-');
115 for (i, flag) in FLAGS.chars().enumerate() {
116 if (bits & (1 << i)) != 0 {
117 param.push(flag);
118 }
119 }
120 Some(param)
121 }
122 })
123 .map(|param| TestDescAndFn {
124 desc: TestDesc {
125 name: TestName::DynTestName(format!(
126 "addr2line {}",
127 param.as_ref().map_or("", String::as_str)
128 )),
129 ignore: false,
130 should_panic: ShouldPanic::No,
131 allow_fail: false,
132 },
133 testfn: TestFn::DynTestFn(Box::new(move || {
134 run_test(param.as_ref().map(String::as_str))
135 })),
136 })
137 .collect()
138 }
139
main()140 fn main() {
141 if !cfg!(target_os = "linux") {
142 return;
143 }
144 let args: Vec<_> = env::args().collect();
145 test::test_main(&args, make_tests());
146 }
147