Stream: git-wasmtime

Topic: wasmtime / issue #9855 [DWARF] Translate `this` in a more...

Wasmtime GitHub notifications bot (Dec 18 2024 at 19:38):

SingleAccretion opened issue #9855:

Currently, for instance methods, this pointers are translated like all other pointers - wrapped in the synthetic types. However, this breaks LLDB's ability to do anything with them as it expects this to be a proper pointer.

(There are still ways to inspect the underlying data, of course, but they're more clunky than just p Member.)

The proposed fix, consistent with the existing system, would be to rename this and effectively transform all instance methods into static ones.

The user experience would then be p __this->Member instead of p Member.

A more ambitious alternative is to translate it into a proper pointer. Unlike for a number of other cases, we _can_ do that (since we have the frame context available), but it's a bit more complicated (need to intelligently intersect ranges of __vmctx with those of this) and more importantly, it wouldn't be consistent with how the rest of the system operates.

Wasmtime GitHub notifications bot (Dec 18 2024 at 21:25):

alexcrichton added the wasmtime:debugging label to Issue #9855.

Last updated: Dec 23 2024 at 13:07 UTC