[PATCH v2] gdb/python: print name of unwinder that claimed frame in debug message

[Simon Marchi]

On 2021-05-10 1:23 p.m., Simon Marchi wrote:
> New in v2:
> 
>  - use python_string_to_host_string to get C string from Python string.
> 
> If we have multiple registered unwinders, this will helps identify which
> unwinder was chosen and make it easier to track down potential problems.
> Unwinders have a mandatory name argument, which we can use in the
> message.
> 
> First, make gdb._execute_unwinders return a tuple containing the name,
> in addition to the UnwindInfo.  Then, make pyuw_sniffer include the name
> in the debug message.
> 
> I moved the debug message earlier.  I think it's good to print it as
> early as possible, so that we see it in case an assert is hit in the
> loop below, for example.

I pushed this.

Simon