1 files changed, 91 insertions, 0 deletions
diff --git a/vendor/addr2line-0.17.0/tests/correctness.rs b/vendor/addr2line-0.17.0/tests/correctness.rs
new file mode 100644
index 000000000..3f7b43373
--- /dev/null
+++ b/vendor/addr2line-0.17.0/tests/correctness.rs
@@ -0,0 +1,91 @@
+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);
+    }
+}