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extern crate addr2line;
extern crate fallible_iterator;
extern crate findshlibs;
extern crate gimli;
extern crate memmap;
extern crate object;
use addr2line::Context;
use fallible_iterator::FallibleIterator;
use findshlibs::{IterationControl, SharedLibrary, TargetSharedLibrary};
use object::Object;
use std::fs::File;
fn find_debuginfo() -> memmap::Mmap {
let path = std::env::current_exe().unwrap();
let file = File::open(&path).unwrap();
let map = unsafe { memmap::Mmap::map(&file).unwrap() };
let file = &object::File::parse(&*map).unwrap();
if let Ok(uuid) = file.mach_uuid() {
for candidate in path.parent().unwrap().read_dir().unwrap() {
let path = candidate.unwrap().path();
if !path.to_str().unwrap().ends_with(".dSYM") {
continue;
}
for candidate in path.join("Contents/Resources/DWARF").read_dir().unwrap() {
let path = candidate.unwrap().path();
let file = File::open(&path).unwrap();
let map = unsafe { memmap::Mmap::map(&file).unwrap() };
let file = &object::File::parse(&*map).unwrap();
if file.mach_uuid().unwrap() == uuid {
return map;
}
}
}
}
return map;
}
#[test]
fn correctness() {
let map = find_debuginfo();
let file = &object::File::parse(&*map).unwrap();
let ctx = Context::new(file).unwrap();
let mut bias = None;
TargetSharedLibrary::each(|lib| {
bias = Some(lib.virtual_memory_bias().0 as u64);
IterationControl::Break
});
let test = |sym: u64, expected_prefix: &str| {
let ip = sym.wrapping_sub(bias.unwrap());
let frames = ctx.find_frames(ip).unwrap();
let frame = frames.last().unwrap().unwrap();
let name = frame.function.as_ref().unwrap().demangle().unwrap();
// Old rust versions generate DWARF with wrong linkage name,
// so only check the start.
if !name.starts_with(expected_prefix) {
panic!("incorrect name '{}', expected {:?}", name, expected_prefix);
}
};
test(test_function as u64, "correctness::test_function");
test(
small::test_function as u64,
"correctness::small::test_function",
);
test(auxiliary::foo as u64, "auxiliary::foo");
}
mod small {
pub fn test_function() {
println!("y");
}
}
fn test_function() {
println!("x");
}
#[test]
fn zero_function() {
let map = find_debuginfo();
let file = &object::File::parse(&*map).unwrap();
let ctx = Context::new(file).unwrap();
for probe in 0..10 {
assert!(ctx.find_frames(probe).unwrap().count().unwrap() < 10);
}
}
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