-exec-step over a blocking function call

[Aleksandar Ristovski <ARistovski@qnx.com>]

Hello,

I have encountered a problem using MI interface. It is not very easy to 
reproduce, hence no real test case, but I will try to describe what I am
seeing:

This is the situation I have:

(gdb)
-exec-step 1
^running
(gdb)
~"Single stepping until exit from function SyncSemWait, \n"
~"which has no line number information.\n"


Where SyncSemWait is a blocking function (as the name suggests, waiting for 
semaphore). Gdb will just sit here since the inferior has several threads,
one 
of which is reading stdin waiting for user input, and apparently input would

unblock. But until it does, gdb is sitting here. The problem I am seeing is
that 
often, while waiting for SyncSemWait to return IDE would issue additional mi

commands which eventually make gdb crash or appear frozen (unresponsive).

I am not sure how should gdb deal with this situation. Any ideas?



Thanks,

Aleksandar Ristovski
QNX Software Systems