From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Mon, 8 Jan 2024 01:21:28 +0400 Subject: Initial vendor packages Signed-off-by: Valentin Popov --- vendor/backtrace/tests/smoke.rs | 323 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 323 insertions(+) create mode 100644 vendor/backtrace/tests/smoke.rs (limited to 'vendor/backtrace/tests/smoke.rs') diff --git a/vendor/backtrace/tests/smoke.rs b/vendor/backtrace/tests/smoke.rs new file mode 100644 index 0000000..683a6f0 --- /dev/null +++ b/vendor/backtrace/tests/smoke.rs @@ -0,0 +1,323 @@ +use backtrace::Frame; +use std::thread; + +#[test] +// FIXME: shouldn't ignore this test on i686-msvc, unsure why it's failing +#[cfg_attr(all(target_arch = "x86", target_env = "msvc"), ignore)] +#[rustfmt::skip] // we care about line numbers here +fn smoke_test_frames() { + frame_1(line!()); + #[inline(never)] fn frame_1(start_line: u32) { frame_2(start_line) } + #[inline(never)] fn frame_2(start_line: u32) { frame_3(start_line) } + #[inline(never)] fn frame_3(start_line: u32) { frame_4(start_line) } + #[inline(never)] fn frame_4(start_line: u32) { + let mut v = Vec::new(); + backtrace::trace(|cx| { + v.push(cx.clone()); + true + }); + + // Various platforms have various bits of weirdness about their + // backtraces. To find a good starting spot let's search through the + // frames + let target = frame_4 as usize; + let offset = v + .iter() + .map(|frame| frame.symbol_address() as usize) + .enumerate() + .filter_map(|(i, sym)| { + if sym >= target { + Some((sym, i)) + } else { + None + } + }) + .min() + .unwrap() + .1; + let mut frames = v[offset..].iter(); + + assert_frame( + frames.next().unwrap(), + frame_4 as usize, + "frame_4", + "tests/smoke.rs", + start_line + 6, + 9, + ); + assert_frame( + frames.next().unwrap(), + frame_3 as usize, + "frame_3", + "tests/smoke.rs", + start_line + 3, + 52, + ); + assert_frame( + frames.next().unwrap(), + frame_2 as usize, + "frame_2", + "tests/smoke.rs", + start_line + 2, + 52, + ); + assert_frame( + frames.next().unwrap(), + frame_1 as usize, + "frame_1", + "tests/smoke.rs", + start_line + 1, + 52, + ); + assert_frame( + frames.next().unwrap(), + smoke_test_frames as usize, + "smoke_test_frames", + "", + 0, + 0, + ); + } + + fn assert_frame( + frame: &Frame, + actual_fn_pointer: usize, + expected_name: &str, + expected_file: &str, + expected_line: u32, + expected_col: u32, + ) { + backtrace::resolve_frame(frame, |sym| { + print!("symbol ip:{:?} address:{:?} ", frame.ip(), frame.symbol_address()); + if let Some(name) = sym.name() { + print!("name:{} ", name); + } + if let Some(file) = sym.filename() { + print!("file:{} ", file.display()); + } + if let Some(lineno) = sym.lineno() { + print!("lineno:{} ", lineno); + } + if let Some(colno) = sym.colno() { + print!("colno:{} ", colno); + } + println!(); + }); + + let ip = frame.ip() as usize; + let sym = frame.symbol_address() as usize; + assert!(ip >= sym); + assert!( + sym >= actual_fn_pointer, + "{:?} < {:?} ({} {}:{}:{})", + sym as *const usize, + actual_fn_pointer as *const usize, + expected_name, + expected_file, + expected_line, + expected_col, + ); + + // windows dbghelp is *quite* liberal (and wrong) in many of its reports + // right now... + // + // This assertion can also fail for release builds, so skip it there + if cfg!(debug_assertions) { + assert!(sym - actual_fn_pointer < 1024); + } + + let mut resolved = 0; + + let mut name = None; + let mut addr = None; + let mut col = None; + let mut line = None; + let mut file = None; + backtrace::resolve_frame(frame, |sym| { + resolved += 1; + name = sym.name().map(|v| v.to_string()); + addr = sym.addr(); + col = sym.colno(); + line = sym.lineno(); + file = sym.filename().map(|v| v.to_path_buf()); + }); + assert!(resolved > 0); + + let name = name.expect("didn't find a name"); + + // in release mode names get weird as functions can get merged + // together with `mergefunc`, so only assert this in debug mode + if cfg!(debug_assertions) { + assert!( + name.contains(expected_name), + "didn't find `{}` in `{}`", + expected_name, + name + ); + } + + addr.expect("didn't find a symbol"); + + if cfg!(debug_assertions) { + let line = line.expect("didn't find a line number"); + let file = file.expect("didn't find a line number"); + if !expected_file.is_empty() { + assert!( + file.ends_with(expected_file), + "{:?} didn't end with {:?}", + file, + expected_file + ); + } + if expected_line != 0 { + assert!( + line == expected_line, + "bad line number on frame for `{}`: {} != {}", + expected_name, + line, + expected_line + ); + } + + // dbghelp on MSVC doesn't support column numbers + if !cfg!(target_env = "msvc") { + let col = col.expect("didn't find a column number"); + if expected_col != 0 { + assert!( + col == expected_col, + "bad column number on frame for `{}`: {} != {}", + expected_name, + col, + expected_col + ); + } + } + } + } +} + +#[test] +fn many_threads() { + let threads = (0..16) + .map(|_| { + thread::spawn(|| { + for _ in 0..16 { + backtrace::trace(|frame| { + backtrace::resolve(frame.ip(), |symbol| { + let _s = symbol.name().map(|s| s.to_string()); + }); + true + }); + } + }) + }) + .collect::>(); + + for t in threads { + t.join().unwrap() + } +} + +#[test] +#[cfg(feature = "rustc-serialize")] +fn is_rustc_serialize() { + extern crate rustc_serialize; + + fn is_encode() {} + fn is_decode() {} + + is_encode::(); + is_decode::(); +} + +#[test] +#[cfg(feature = "serde")] +fn is_serde() { + extern crate serde; + + fn is_serialize() {} + fn is_deserialize() {} + + is_serialize::(); + is_deserialize::(); +} + +#[test] +fn sp_smoke_test() { + let mut refs = vec![]; + recursive_stack_references(&mut refs); + return; + + #[inline(never)] + fn recursive_stack_references(refs: &mut Vec) { + assert!(refs.len() < 5); + + let x = refs.len(); + refs.push(&x as *const _ as usize); + + if refs.len() < 5 { + recursive_stack_references(refs); + eprintln!("exiting: {}", x); + return; + } + + backtrace::trace(make_trace_closure(refs)); + eprintln!("exiting: {}", x); + } + + // NB: the following `make_*` functions are pulled out of line, rather than + // defining their results as inline closures at their call sites, so that + // the resulting closures don't have "recursive_stack_references" in their + // mangled names. + + fn make_trace_closure<'a>( + refs: &'a mut Vec, + ) -> impl FnMut(&backtrace::Frame) -> bool + 'a { + let mut child_sp = None; + let mut child_ref = None; + move |frame| { + eprintln!("\n=== frame ==================================="); + + let mut is_recursive_stack_references = false; + backtrace::resolve(frame.ip(), |sym| { + is_recursive_stack_references |= + sym.name() + .and_then(|name| name.as_str()) + .map_or(false, |name| { + eprintln!("name = {}", name); + name.contains("recursive_stack_references") + }) + }); + + let sp = frame.sp() as usize; + eprintln!("sp = {:p}", sp as *const u8); + if sp == 0 { + // If the SP is null, then we don't have an implementation for + // getting the SP on this target. Just keep walking the stack, + // but don't make our assertions about the on-stack pointers and + // SP values. + return true; + } + + // The stack grows down. + if let Some(child_sp) = child_sp { + assert!(child_sp <= sp); + } + + if is_recursive_stack_references { + let r = refs.pop().unwrap(); + eprintln!("ref = {:p}", r as *const u8); + if sp != 0 { + assert!(r > sp); + if let Some(child_ref) = child_ref { + assert!(sp >= child_ref); + } + } + child_ref = Some(r); + } + + child_sp = Some(sp); + true + } + } +} -- cgit v1.2.3