[Bug gdb/18274] gdb crashed when I move my mouse to a const string

["palves at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18274

--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
> ok, I will try to run gdb alone. 
> but i don't kown what command to you use to simulate the mouse move to a const
> string. 
> print is ok.
> i use --interpretor mi to send the same cmd as eclipse, it show error also.

I'd debug gdb, and put a breakpoint in call_function_by_hand.  Then in the
inferior gdb, issue the MI commands that trigger the bug.  You'll probably
find the backtrace shows value_allocate_space_in_inferior.  I suspect that
something around:

 (gdb) print "foo" + 1

triggers the issue too.  I'd try explict inferior function calls too:

 (gdb) print foo()

And there's the possibility that bug really is MI varobj specific too.

I'd run gdb under valgrind as well, in case this is caused by gdb memory
corruption.

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