[lldb-dev] Input reader prompt does not appear when remote debugging on linux 64-bit

[Todd Fiala]

> I may well start to look at this bug myself, if noone else is already
active in that area.

I'm not active on it.  I say have at it, Matthew :-)


On Thu, Apr 10, 2014 at 4:20 AM, Matthew Gardiner <mg11 at csr.com> wrote:

> Hi folks
>
> I've built a 64-bit intel linux lldb (from TOT as of April 9), with a view
> to connecting to a gdbserver on the same box.
>
> Basically I just run up my server like:
>
> ~ gdbserver 127.0.0.1:12345 ./simp-x64
>
> Then I connect my lldb as follows:
>
> ~ lldb
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
> ImportError: No module named lldb.embedded_interpreter
> (lldb) target create simp-x64
> Current executable set to 'simp-x64' (x86_64).
> (lldb) gdb-remote 12345
> Process 3244 stopped
> * thread #1: tid = 3244, , stop reason = signal SIGTRAP
>     frame #0:
>
> The issue, being that the "input reader" (prompt) is not printed. If I
> type some random input and hit enter, then the prompt appears.
>
> By comparision doing local debug, after reporting the initial stop, the
> prompt is printed.
>
> ~ lldb
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
> ImportError: No module named lldb.embedded_interpreter
> (lldb) target create simp-x64
> Current executable set to 'simp-x64' (x86_64).
> (lldb) process launch --stop-at-entry
> Process 3324 launching
> Process 3324 launched: '/home/mg11/src/arch-tests/simple1/simp-x64'
> (x86_64)
> Process 3324 stopped
> * thread #1: tid = 3324, 0x0000003675a011f0, name = 'simp-x64', stop
> reason = trace
>     frame #0: 0x0000003675a011f0
> -> 0x3675a011f0:  movq   %rsp, %rdi
>    0x3675a011f3:  callq  0x3675a046e0
>    0x3675a011f8:  movq   %rax, %r12
>    0x3675a011fb:  movl   0x21eb97(%rip), %eax
> (lldb)
>
> I may well start to look at this bug myself, if noone else is already
> active in that area.
>
> Thoughts?
>
> thanks
> Matt
>
>
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-- 
Todd Fiala | Software Engineer | tfiala at google.com | 650-943-3180
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