~/talk

Debugging WebAssembly with modern tools

Talkat Chrome Dev Summit 2020 · 2020-12-09..12-10· [webassembly]
slides:none on file

Chrome DevTools plus Emscripten provide source-level debugging for C++ compiled to WebAssembly: raw disassembly shows unreadable locals but installing the Wasm debugging extension and emitting DWARF lets DevTools show original C++ files, step over expressions, and inspect typed variables. The demos compile a small Fibonacci and Mandelbrot demos to WASM and succeed in stepping through real and imaginary parts and palette colors. Splitting debug info out with split-out DWARF reduces binary by ~30KB for the example; Google Earth uses this workflow on large C++ builds.

AI-written summary · about

  1. 0:00Intro
  2. 0:18Basic debugging
  3. 7:13Debugging larger files
  4. 8:43Outro
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