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[Bug c++/15519] New: GDB 7.6 is 94x slower than GDB 7.5.1 using a certain core file


http://sourceware.org/bugzilla/show_bug.cgi?id=15519

             Bug #: 15519
           Summary: GDB 7.6 is 94x slower than GDB 7.5.1 using a certain
                    core file
           Product: gdb
           Version: 7.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: psmith@gnu.org
    Classification: Unclassified


Please see this thread: http://sourceware.org/ml/gdb/2013-05/msg00074.html

I couldn't pick a particular component: the slowdown appears when running a
macro on a core file from a C++ program; the macro walks through a list of
objects referenced by another object.  Other core dumps from the same
executable do not show this slowdown, and so far we haven't been able to
reproduce it using live debugging.

Bisecting via Git declares the slowdown to have been introduced with this
commit:

677b1bfabd372790dca4dad32fcb05dd77658728 is the first bad commit
commit 677b1bfabd372790dca4dad32fcb05dd77658728
Author: Keith Seitz <keiths@redhat.com>
Date:   Fri Nov 16 20:54:28 2012 +0000


I'll see if I can get more details.

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