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From: "derek.cole at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/16935] New: -fPIE and -pie fllags cause Memory access
 errors on breakpoint
Date: Mon, 12 May 2014 15:35:00 -0000
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X-Bugzilla-Component: c++
X-Bugzilla-Version: 7.7
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https://sourceware.org/bugzilla/show_bug.cgi?id=16935

            Bug ID: 16935
           Summary: -fPIE and -pie fllags cause Memory access errors on
                    breakpoint
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: derek.cole at gmail dot com

When compiling the tor project code, and trying to run it in gdb, I recieve
errors like the following:

GNU gdb (GDB) 7.7
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-freebsd10.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from tor...done.
(gdb) break config.c:3626
Breakpoint 1 at 0xfde72: file src/or/config.c, line 3626.
(gdb) run
Starting program: /usr/home/jon/swdev/apps/tor/src/or/tor -f /home/jon/torrc
Error in re-setting breakpoint 1: Cannot access memory at address 0xfdb90
Error in re-setting breakpoint 1: Cannot access memory at address 0xfdb90

I have also tried to compile 7.7.1 and I got the same problems. This is on a
freebsd/pcbsd 10 system. If I remove the PIE references in the makefiles, the
problem goes away.

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