The Browser Company has made its Swift toolchain builds for Windows publicly available via a symbol server at swift-toolchain.thebrowserco.com/symbols. This gives Swift on Windows developers free, unauthenticated access to PDB files covering the Swift runtime, standard library, and compiler infrastructure, enabling fully symbolicated stack traces in WinDBG, Visual Studio, and Windows Performance Analyzer. The post explains how to configure the symbol server system-wide via _NT_SYMBOL_PATH or per-tool, and provides deep background on object file formats (ELF, PE/COFF, Mach-O), debug information standards (DWARF vs CodeView/PDB), and how Swift emits native CodeView debug info on Windows. Additionally, a SymbolLocatorSymStore plugin for LLDB is being upstreamed to LLVM to add native Microsoft symbol server protocol support to the Swift toolchain's debugger.
