Re: [PATCH][gdb/testsuite] Add label option to proc cu

[Tom de Vries via Gdb-patches <gdb-patches@sourceware.org>]

On 8/27/21 3:24 PM, Tom Tromey wrote:
>>>>>> "Tom" == Tom de Vries via Gdb-patches <gdb-patches@sourceware.org> writes:
> 
> Tom> +	upvar $label my_label
> Tom> +	set my_label $_cu_label
> 
> Maybe this should be conditional on $label != ""

It should indeed.

I tried to understand why I didn't run into an error with this, and:
...
$ cat test.tcl
#!/usr/bin/tclsh

proc foo { } {
    set label ""
    upvar $label my_label
    set my_label "bla"
}

foo
puts ${}
$ ./test.tcl
bla
...
apparently it's possible to create a variable with the empty string as
variable name.

Thanks,
- Tom