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