Stream: git-wasmtime

Topic: wasmtime / issue #12777 Debugging: tracking issue for MVP...

Wasmtime GitHub notifications bot (Mar 13 2026 at 20:30):

cfallin opened issue #12777:

The "MVP release" of the user-facing guest-debugging feature in Wasmtime is pretty close now, and requires:

• [x] #12756: the environment in which debug components run
• [ ] #12771: the built-in gdbstub component, usable via wasmtime run -g
• [ ] webassembly/wasi-sdk#614 and corresponding release: a release of wasi-sdk with LLDB containing all necessary features
• [ ] update documentation to describe the guest-debugging flow

Post-MVP we have the following functionality queued up in some order:

• [ ] #12776: debugging under wasmtime serve
• [ ] #12188: memory watchpoints
• [ ] "mutable debugging": the ability to inject calls, force early returns, and update locals/operand-stack values
  • several levels here; the last two don't have gdbstub commands and aren't really necessary to change source-level locals in debug/non-opt Wasm component builds
• [ ] record/replay and debugging of replayed traces (cc @arjunr2)
• [ ] Store snapshots and reversible debugging
• [ ] debug-adapter DAP world, top-level DAP multiplexer, and adapter components for DWARF and for an interpreter

Wasmtime GitHub notifications bot (Mar 13 2026 at 20:30):

cfallin added the wasmtime:debugging label to Issue #12777.

Wasmtime GitHub notifications bot (Mar 27 2026 at 19:27):

cfallin edited issue #12777:

The "MVP release" of the user-facing guest-debugging feature in Wasmtime is pretty close now, and requires:

• [x] #12756: the environment in which debug components run
• [x] #12771: the built-in gdbstub component, usable via wasmtime run -g
• [ ] webassembly/wasi-sdk#614 and corresponding release: a release of wasi-sdk with LLDB containing all necessary features
• [ ] update documentation to describe the guest-debugging flow

Post-MVP we have the following functionality queued up in some order:

• [ ] #12776: debugging under wasmtime serve
• [ ] #12188: memory watchpoints
• [ ] "mutable debugging": the ability to inject calls, force early returns, and update locals/operand-stack values
  • several levels here; the last two don't have gdbstub commands and aren't really necessary to change source-level locals in debug/non-opt Wasm component builds
• [ ] record/replay and debugging of replayed traces (cc @arjunr2)
• [ ] Store snapshots and reversible debugging
• [ ] debug-adapter DAP world, top-level DAP multiplexer, and adapter components for DWARF and for an interpreter

Wasmtime GitHub notifications bot (Mar 27 2026 at 19:27):

cfallin edited issue #12777:

The "MVP release" of the user-facing guest-debugging feature in Wasmtime is pretty close now, and requires:

• [x] #12756: the environment in which debug components run
• [x] #12771: the built-in gdbstub component, usable via wasmtime run -g
• [x] webassembly/wasi-sdk#614 and corresponding release: a release of wasi-sdk with LLDB containing all necessary features
• [ ] update documentation to describe the guest-debugging flow

Post-MVP we have the following functionality queued up in some order:

• [ ] #12776: debugging under wasmtime serve
• [ ] #12188: memory watchpoints
• [ ] "mutable debugging": the ability to inject calls, force early returns, and update locals/operand-stack values
  • several levels here; the last two don't have gdbstub commands and aren't really necessary to change source-level locals in debug/non-opt Wasm component builds
• [ ] record/replay and debugging of replayed traces (cc @arjunr2)
• [ ] Store snapshots and reversible debugging
• [ ] debug-adapter DAP world, top-level DAP multiplexer, and adapter components for DWARF and for an interpreter

Wasmtime GitHub notifications bot (Apr 01 2026 at 02:38):

cfallin edited issue #12777:

The "MVP release" of the user-facing guest-debugging feature in Wasmtime is pretty close now, and requires:

• [x] #12756: the environment in which debug components run
• [x] #12771: the built-in gdbstub component, usable via wasmtime run -g
• [x] webassembly/wasi-sdk#614 and corresponding release: a release of wasi-sdk with LLDB containing all necessary features
• [ ] update documentation to describe the guest-debugging flow

Post-MVP we have the following functionality queued up in some order:

• [x] #12776: debugging under wasmtime serve
• [ ] #12188: memory watchpoints
• [ ] "mutable debugging": the ability to inject calls, force early returns, and update locals/operand-stack values
  • several levels here; the last two don't have gdbstub commands and aren't really necessary to change source-level locals in debug/non-opt Wasm component builds
• [ ] record/replay and debugging of replayed traces (cc @arjunr2)
• [ ] Store snapshots and reversible debugging
• [ ] debug-adapter DAP world, top-level DAP multiplexer, and adapter components for DWARF and for an interpreter

Last updated: Apr 13 2026 at 00:25 UTC