| // ignore-android FIXME #17520 |
| // ignore-cloudabi spawning processes is not supported |
| // ignore-emscripten spawning processes is not supported |
| // ignore-openbsd no support for libbacktrace without filename |
| // compile-flags:-g |
| |
| 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) |
| } |
| |
| 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); |
| |
| // Make sure a stack trace is printed |
| let p = template(me).arg("double-fail").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(&expected("double")), |
| "bad output3: {}", s); |
| |
| // Make sure a stack trace isn't printed too many times |
| 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]); |
| } |
| } |