1 files changed, 43 insertions, 0 deletions
diff --git a/ctr-std/src/sys/unix/backtrace/printing/mod.rs b/ctr-std/src/sys/unix/backtrace/printing/mod.rs
new file mode 100644
index 0000000..caa6071
--- /dev/null
+++ b/ctr-std/src/sys/unix/backtrace/printing/mod.rs
@@ -0,0 +1,43 @@
+// Copyright 2014-2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+mod dladdr;
+
+use sys::backtrace::BacktraceContext;
+use sys_common::backtrace::Frame;
+use io;
+
+#[cfg(target_os = "emscripten")]
+pub use self::dladdr::resolve_symname;
+
+#[cfg(target_os = "emscripten")]
+pub fn foreach_symbol_fileline<F>(_: Frame, _: F, _: &BacktraceContext) -> io::Result<bool>
+where
+    F: FnMut(&[u8], u32) -> io::Result<()>
+{
+    Ok(false)
+}
+
+#[cfg(not(target_os = "emscripten"))]
+pub use sys_common::gnu::libbacktrace::foreach_symbol_fileline;
+
+#[cfg(not(target_os = "emscripten"))]
+pub fn resolve_symname<F>(frame: Frame, callback: F, bc: &BacktraceContext) -> io::Result<()>
+where
+    F: FnOnce(Option<&str>) -> io::Result<()>
+{
+    ::sys_common::gnu::libbacktrace::resolve_symname(frame, |symname| {
+        if symname.is_some() {
+            callback(symname)
+        } else {
+            dladdr::resolve_symname(frame, callback, bc)
+        }
+    }, bc)
+}