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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
// run-pass
// ignore-android FIXME #17520
// ignore-emscripten spawning processes is not supported
// ignore-openbsd no support for libbacktrace without filename
// ignore-sgx no processes
// ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
// ignore-fuchsia Backtraces not symbolized
// compile-flags:-g
// compile-flags:-Cstrip=none
use std::env;
use std::process::{Command, Stdio};
use std::str;
#[inline(never)]
fn foo() {
let _v = vec![1, 2, 3];
if env::var_os("IS_TEST").is_some() {
panic!()
}
}
#[inline(never)]
fn double() {
struct Double;
impl Drop for Double {
fn drop(&mut self) { panic!("twice") }
}
let _d = Double;
panic!("once");
}
fn template(me: &str) -> Command {
let mut m = Command::new(me);
m.env("IS_TEST", "1")
.stdout(Stdio::piped())
.stderr(Stdio::piped());
return m;
}
fn expected(fn_name: &str) -> String {
format!(" backtrace::{}", fn_name)
}
#[cfg(not(panic = "abort"))]
fn contains_verbose_expected(s: &str, fn_name: &str) -> bool {
// HACK(eddyb) work around the fact that verbosely demangled stack traces
// (from `RUST_BACKTRACE=full`, or, as is the case here, panic-in-panic)
// may contain symbols with hashes in them, i.e. `backtrace[...]::`.
let prefix = " backtrace";
let suffix = &format!("::{}", fn_name);
s.match_indices(prefix).any(|(i, _)| {
s[i + prefix.len()..]
.trim_start_matches('[')
.trim_start_matches(char::is_alphanumeric)
.trim_start_matches(']')
.starts_with(suffix)
})
}
fn runtest(me: &str) {
// Make sure that the stack trace is printed
let p = template(me).arg("fail").env("RUST_BACKTRACE", "1").spawn().unwrap();
let out = p.wait_with_output().unwrap();
assert!(!out.status.success());
let s = str::from_utf8(&out.stderr).unwrap();
assert!(s.contains("stack backtrace") && s.contains(&expected("foo")),
"bad output: {}", s);
assert!(s.contains(" 0:"), "the frame number should start at 0");
// Make sure the stack trace is *not* printed
// (Remove RUST_BACKTRACE from our own environment, in case developer
// is running `make check` with it on.)
let p = template(me).arg("fail").env_remove("RUST_BACKTRACE").spawn().unwrap();
let out = p.wait_with_output().unwrap();
assert!(!out.status.success());
let s = str::from_utf8(&out.stderr).unwrap();
assert!(!s.contains("stack backtrace") && !s.contains(&expected("foo")),
"bad output2: {}", s);
// Make sure the stack trace is *not* printed
// (RUST_BACKTRACE=0 acts as if it were unset from our own environment,
// in case developer is running `make check` with it set.)
let p = template(me).arg("fail").env("RUST_BACKTRACE","0").spawn().unwrap();
let out = p.wait_with_output().unwrap();
assert!(!out.status.success());
let s = str::from_utf8(&out.stderr).unwrap();
assert!(!s.contains("stack backtrace") && !s.contains(" - foo"),
"bad output3: {}", s);
#[cfg(not(panic = "abort"))]
{
// Make sure a stack trace is printed
let p = template(me).arg("double-fail").env("RUST_BACKTRACE","0").spawn().unwrap();
let out = p.wait_with_output().unwrap();
assert!(!out.status.success());
let s = str::from_utf8(&out.stderr).unwrap();
// loosened the following from double::h to double:: due to
// spurious failures on mac, 32bit, optimized
assert!(
s.contains("stack backtrace") &&
s.contains("panic in a destructor during cleanup") &&
contains_verbose_expected(s, "double"),
"bad output3: {}", s
);
// Make sure it's only one stack trace.
assert_eq!(s.split("stack backtrace").count(), 2);
// Make sure a stack trace isn't printed too many times
// even with RUST_BACKTRACE=1. It should be printed twice.
let p = template(me).arg("double-fail")
.env("RUST_BACKTRACE", "1").spawn().unwrap();
let out = p.wait_with_output().unwrap();
assert!(!out.status.success());
let s = str::from_utf8(&out.stderr).unwrap();
let mut i = 0;
for _ in 0..2 {
i += s[i + 10..].find("stack backtrace").unwrap() + 10;
}
assert!(s[i + 10..].find("stack backtrace").is_none(),
"bad output4: {}", s);
}
}
fn main() {
let args: Vec<String> = env::args().collect();
if args.len() >= 2 && args[1] == "fail" {
foo();
} else if args.len() >= 2 && args[1] == "double-fail" {
double();
} else {
runtest(&args[0]);
}
}
|
