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#![allow(non_camel_case_types)]
use prelude::*;
use os;
use sync::atomic;
pub use sys::backtrace::write;
pub fn log_enabled() -> bool {
static ENABLED: atomic::AtomicInt = atomic::INIT_ATOMIC_INT;
match ENABLED.load(atomic::SeqCst) {
1 => return false,
2 => return true,
_ => {}
}
let val = match os::getenv("RUST_BACKTRACE") {
Some(..) => 2,
None => 1,
};
ENABLED.store(val, atomic::SeqCst);
val == 2
}
#[cfg(test)]
mod test {
use prelude::*;
use sys_common;
macro_rules! t { ($a:expr, $b:expr) => ({
let mut m = Vec::new();
sys_common::backtrace::demangle(&mut m, $a).unwrap();
assert_eq!(String::from_utf8(m).unwrap(), $b);
}) }
#[test]
fn demangle() {
t!("test", "test");
t!("_ZN4testE", "test");
t!("_ZN4test", "_ZN4test");
t!("_ZN4test1a2bcE", "test::a::bc");
}
#[test]
fn demangle_dollars() {
t!("_ZN4$UP$E", "Box");
t!("_ZN8$UP$testE", "Boxtest");
t!("_ZN8$UP$test4foobE", "Boxtest::foob");
t!("_ZN10$u{20}test4foobE", " test::foob");
}
#[test]
fn demangle_many_dollars() {
t!("_ZN14test$u{20}test4foobE", "test test::foob");
t!("_ZN12test$UP$test4foobE", "testBoxtest::foob");
}
#[test]
fn demangle_windows() {
t!("ZN4testE", "test");
t!("ZN14test$u{20}test4foobE", "test test::foob");
t!("ZN12test$UP$test4foobE", "testBoxtest::foob");
}
}