How to get function name from wasm_frame_t?

[liamappelbe]

I'm trying to make my trap handling code show a user friendly stack trace. I'd at least like to show which functions are hit in the trace.

Looking at the C API functions for wasm_frame_t, I can get the function index, function offset, and module offset, for a given frame. Function index sounds useful, but what is it an index into? Is there a way of looking up the name of a function from its index?

[fschutt]

@liamappelbe The function index is the index in the function index space of the WebAssembly module that this frame comes from (i.e func 1, func 2, relative to the compiled module).

That will not help you get the function name. Currently we only have these functions:

• wasm_frame_func_index
• wasm_frame_func_offset
• wasm_frame_module_offset

However, the function name is currently inaccessible from the outside (it's stored as an Option<String> on the FrameInfo). I will have to add extra functions to make these fields accessible, should be fixed soon.