[Bug c++/12679] New: gdb does show user code when no libc available

["rjgebis at hotmail dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=12679

           Summary: gdb does show user code when no libc available
           Product: gdb
           Version: 7.2
            Status: NEW
          Severity: minor
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: rjgebis@hotmail.com


I just installed from source 7.2 gdb release on CentOS 5.6.
After loading core file switching between threads when I do list to show source
I get source from last list where user code was available.

For example I am on thread 5 and do "where"
it shows stack with libc on top of the stack. If I do up few times until I get
to frame where user code executed, I do "list" and see my code.

Now I switch to some other thread and right away I issue "list", if libc is at
top of the stack 
list shows wrong source from user stack (looks like last "list" from different
thread - user code)
instead of printing "No source available" until i go up the stack to user code.

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