Expand description

Symbolic is a library written in Rust which is used at Sentry to implement symbolication of native stack traces and more. It consists of multiple largely independent crates which are bundled together into a C and Python library so it can be used independently of Rust.

What’s in the package

Symbolic provides the following functionality:

  • Symbolication based on custom cache files (symcache)
  • Symbol cache file generators from:
    • Mach, ELF and PE symbol tables
    • Mach and ELF embedded DWARF data
    • PDB CodeView debug information
    • Breakpad symbol files
  • Demangling support
    • C++ (GCC, clang and MSVC)
    • Objective C / Objective C++
    • Rust
    • Swift
  • JavaScript sourcemap expansion (vie symbolic-cabi only, use sourcemap crate instead)
  • Proguard function mappings (via symbolic-cabi only, use proguard crate instead)
  • Breakpad processing
    • Generate Breakpad symbol files from Mach, ELF and PDBs
  • Convenient C and Python library
  • Processing of Unreal Engine 4 native crash reports
    • Extract and process minidumps
    • Expose logs and UE4 context information


Add symbolic as a dependency to your Cargo.toml. You will most likely want to activate some of the features:

  • cfi: Facilities to extract stack unwinding information (sometimes called CFI) from object files.
  • debuginfo (default): Contains support for various object file formats and debugging information. Currently, this comprises MachO and ELF (with DWARF debugging), PE and PDB, as well as Breakpad symbols.
  • demangle: Demangling for Rust, C++, Swift and Objective C symbols. This feature requires a C++14 compiler on the PATH.
  • symcache: An optimized, platform-independent storage for common debugging information. This allows blazing fast symbolication of instruction addresses to function names and file locations.
  • unreal: Processing of Unreal Engine 4 crash reports.

There are also alternate versions for some of the above features that additionally add implementations for serde::{Deserialize, Serialize} on suitable types:

  • common-serde
  • debuginfo-serde
  • unreal-serde

Minimal Rust Version

This crate is known to require at least Rust 1.41.


Handling of Call Frame Information (stack frame info).

Common functionality for symbolic.

Abstractions for dealing with object files and debug information.

Demangling support for various languages and compilers.

Provides SymCache support.

API to process Unreal Engine 4 crashes.