/src/test/run-pass/backtrace.rs
Rust | 130 lines | 83 code | 16 blank | 31 comment | 21 complexity | 37b91412fbc3881667a40dfae80f1711 MD5 | raw file
- // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
- // file at the top-level directory of this distribution and at
- // http://rust-lang.org/COPYRIGHT.
- //
- // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
- // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
- // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
- // option. This file may not be copied, modified, or distributed
- // except according to those terms.
- // no-pretty-expanded FIXME #15189
- // ignore-android FIXME #17520
- // 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 {
- // FIXME(#32481)
- //
- // On windows, we read the function name from debuginfo using some
- // system APIs. For whatever reason, these APIs seem to use the
- // "name" field, which is only the "relative" name, not the full
- // name with namespace info, so we just see `foo` and not
- // `backtrace::foo` as we see on linux (which uses the linkage
- // name).
- if cfg!(windows) && cfg!(target_env = "msvc") {
- format!(" - {}", fn_name)
- } else {
- 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);
- // 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() {
- if cfg!(windows) && cfg!(target_arch = "x86") && cfg!(target_env = "gnu") {
- return
- }
- 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]);
- }
- }