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use backtrace::Backtrace;
// 50-character module name
mod _234567890_234567890_234567890_234567890_234567890 {
// 50-character struct name
#[allow(non_camel_case_types)]
pub struct _234567890_234567890_234567890_234567890_234567890<T>(T);
impl<T> _234567890_234567890_234567890_234567890_234567890<T> {
#[allow(dead_code)]
pub fn new() -> crate::Backtrace {
crate::Backtrace::new()
}
}
}
// Long function names must be truncated to (MAX_SYM_NAME - 1) characters.
// Only run this test for msvc, since gnu prints "<no info>" for all frames.
#[test]
#[cfg(all(windows, target_env = "msvc"))]
fn test_long_fn_name() {
use _234567890_234567890_234567890_234567890_234567890::_234567890_234567890_234567890_234567890_234567890 as S;
// 10 repetitions of struct name, so fully qualified function name is
// atleast 10 * (50 + 50) * 2 = 2000 characters long.
// It's actually longer since it also includes `::`, `<>` and the
// name of the current module
let bt = S::<S<S<S<S<S<S<S<S<S<i32>>>>>>>>>>::new();
println!("{:?}", bt);
let mut found_long_name_frame = false;
for frame in bt.frames() {
let symbols = frame.symbols();
if symbols.is_empty() {
continue;
}
if let Some(function_name) = symbols[0].name() {
let function_name = function_name.as_str().unwrap();
if function_name.contains("::_234567890_234567890_234567890_234567890_234567890") {
found_long_name_frame = true;
assert!(function_name.len() > 200);
}
}
}
assert!(found_long_name_frame);
}
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