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

[Matthew Gardiner]

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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