138 lines
4.6 KiB
Rust
138 lines
4.6 KiB
Rust
// run-pass
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// ignore-android FIXME #17520
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// ignore-emscripten spawning processes is not supported
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// ignore-openbsd no support for libbacktrace without filename
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// ignore-sgx no processes
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// ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
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// ignore-fuchsia Backtraces not symbolized
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// compile-flags:-g
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// compile-flags:-Cstrip=none
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use std::env;
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use std::process::{Command, Stdio};
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use std::str;
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#[inline(never)]
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fn foo() {
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let _v = vec![1, 2, 3];
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if env::var_os("IS_TEST").is_some() {
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panic!()
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}
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}
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#[inline(never)]
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fn double() {
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struct Double;
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impl Drop for Double {
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fn drop(&mut self) { panic!("twice") }
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}
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let _d = Double;
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panic!("once");
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}
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fn template(me: &str) -> Command {
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let mut m = Command::new(me);
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m.env("IS_TEST", "1")
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.stdout(Stdio::piped())
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.stderr(Stdio::piped());
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return m;
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}
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fn expected(fn_name: &str) -> String {
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format!(" backtrace::{}", fn_name)
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}
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#[cfg(not(panic = "abort"))]
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fn contains_verbose_expected(s: &str, fn_name: &str) -> bool {
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// HACK(eddyb) work around the fact that verbosely demangled stack traces
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// (from `RUST_BACKTRACE=full`, or, as is the case here, panic-in-panic)
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// may contain symbols with hashes in them, i.e. `backtrace[...]::`.
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let prefix = " backtrace";
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let suffix = &format!("::{}", fn_name);
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s.match_indices(prefix).any(|(i, _)| {
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s[i + prefix.len()..]
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.trim_start_matches('[')
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.trim_start_matches(char::is_alphanumeric)
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.trim_start_matches(']')
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.starts_with(suffix)
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})
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}
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fn runtest(me: &str) {
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// Make sure that the stack trace is printed
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let p = template(me).arg("fail").env("RUST_BACKTRACE", "1").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(s.contains("stack backtrace") && s.contains(&expected("foo")),
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"bad output: {}", s);
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assert!(s.contains(" 0:"), "the frame number should start at 0");
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// Make sure the stack trace is *not* printed
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// (Remove RUST_BACKTRACE from our own environment, in case developer
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// is running `make check` with it on.)
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let p = template(me).arg("fail").env_remove("RUST_BACKTRACE").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(!s.contains("stack backtrace") && !s.contains(&expected("foo")),
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"bad output2: {}", s);
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// Make sure the stack trace is *not* printed
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// (RUST_BACKTRACE=0 acts as if it were unset from our own environment,
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// in case developer is running `make check` with it set.)
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let p = template(me).arg("fail").env("RUST_BACKTRACE","0").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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assert!(!s.contains("stack backtrace") && !s.contains(" - foo"),
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"bad output3: {}", s);
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#[cfg(not(panic = "abort"))]
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{
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// Make sure a stack trace is printed
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let p = template(me).arg("double-fail").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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// loosened the following from double::h to double:: due to
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// spurious failures on mac, 32bit, optimized
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assert!(
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s.contains("stack backtrace") &&
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s.contains("panic in a destructor during cleanup") &&
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contains_verbose_expected(s, "double"),
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"bad output3: {}", s
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);
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// Make sure a stack trace isn't printed too many times
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//
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// Currently it is printed 3 times ("once", "twice" and "panic in a destructor during
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// cleanup") but in the future the last one may be removed.
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let p = template(me).arg("double-fail")
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.env("RUST_BACKTRACE", "1").spawn().unwrap();
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let out = p.wait_with_output().unwrap();
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assert!(!out.status.success());
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let s = str::from_utf8(&out.stderr).unwrap();
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let mut i = 0;
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for _ in 0..3 {
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i += s[i + 10..].find("stack backtrace").unwrap() + 10;
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}
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assert!(s[i + 10..].find("stack backtrace").is_none(),
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"bad output4: {}", s);
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}
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}
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() >= 2 && args[1] == "fail" {
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foo();
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} else if args.len() >= 2 && args[1] == "double-fail" {
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double();
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} else {
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runtest(&args[0]);
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}
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}
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