[Bug general/4648] New: Trying to read from start_thread () frame gives ptrace errors

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

I will attach a test program in a minute to demonstrate - on x86_64, loading 
this program into the source window, and then attempting to read information 
from the start_thread frame (which shows up as the second [unknown] frame in 
the second thread) reliably prints out ptrace errors each time the frame is 
clicked, resulting in no information in the window.

ptrace: Input/output error (pt 0x2, pid 11167, addr 0x555555998540, data 0x0)
   at frysk.sys.Ptrace$AddressSpace.peek(FryskGui)
   at frysk.proc.ptrace.AddressSpaceByteBuffer$PeekRequest.execute(FryskGui)
   at frysk.event.Request$Handler.execute(FryskGui)
   at frysk.event.EventLoop.runEventLoop(FryskGui)
   at frysk.event.EventLoop.run(FryskGui)
   at frysk.gui.Gui$4.run(FryskGui)
   at java.lang.Thread.run(libgcj.so.7rh)

-- 
           Summary: Trying to read from start_thread () frame gives ptrace
                    errors
           Product: frysk
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: general
        AssignedTo: frysk-bugzilla at sourceware dot org
        ReportedBy: mcvet at redhat dot com
OtherBugsDependingO 1633
             nThis:


http://sourceware.org/bugzilla/show_bug.cgi?id=4648

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