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//@normalize-stderr-test: "::<.*>" -> ""
#[inline(never)]
fn func_a() -> Box<[*mut ()]> {
func_b::<u8>()
}
#[inline(never)]
fn func_b<T>() -> Box<[*mut ()]> {
func_c()
}
macro_rules! invoke_func_d {
() => {
func_d()
};
}
#[inline(never)]
fn func_c() -> Box<[*mut ()]> {
invoke_func_d!()
}
#[inline(never)]
fn func_d() -> Box<[*mut ()]> {
unsafe {
let count = miri_backtrace_size(0);
let mut buf = vec![std::ptr::null_mut(); count];
miri_get_backtrace(1, buf.as_mut_ptr());
buf.into()
}
}
fn main() {
let mut seen_main = false;
let frames = func_a();
for frame in frames.iter() {
let miri_frame = unsafe { miri_resolve_frame(*frame, 1) };
let mut name = vec![0; miri_frame.name_len];
let mut filename = vec![0; miri_frame.filename_len];
unsafe {
miri_resolve_frame_names(*frame, 0, name.as_mut_ptr(), filename.as_mut_ptr());
}
let name = String::from_utf8(name).unwrap();
let filename = String::from_utf8(filename).unwrap();
if name == "func_a" {
assert_eq!(func_a as *mut (), miri_frame.fn_ptr);
}
// Print every frame to stderr.
let out = format!("{}:{}:{} ({})", filename, miri_frame.lineno, miri_frame.colno, name);
eprintln!("{}", out);
// Print the 'main' frame (and everything before it) to stdout, skipping
// the printing of internal (and possibly fragile) libstd frames.
// Stdout is less normalized so we see more, but it also means we can print less
// as platform differences would lead to test suite failures.
if !seen_main {
println!("{}", out);
seen_main = name == "main";
}
}
}
// This goes at the bottom of the file so that we can change it
// without disturbing line numbers of the functions in the backtrace.
extern "Rust" {
fn miri_backtrace_size(flags: u64) -> usize;
fn miri_get_backtrace(flags: u64, buf: *mut *mut ());
fn miri_resolve_frame(ptr: *mut (), flags: u64) -> MiriFrame;
fn miri_resolve_frame_names(ptr: *mut (), flags: u64, name_buf: *mut u8, filename_buf: *mut u8);
}
#[derive(Debug)]
#[repr(C)]
struct MiriFrame {
name_len: usize,
filename_len: usize,
lineno: u32,
colno: u32,
fn_ptr: *mut (),
}
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