[Bug backtrace/14492] broken with -fPIE -pie

["jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14492

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |jan.kratochvil at redhat
                   |                            |dot com

--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-08-18 08:51:11 UTC ---
Is it a regression, did gdb-7.4.1 work?

I tried to build 'crack-language' but it failed on missing llvm despite
configure succeeded, I did not investigate it more.

For the comment there:

# according to gdb it crashes at instruction "test   %eax,%eax"
# #10 0x0000038e3338d57f in operator< (other=..., this=<optimized out>) at
# debug/DebugTools.cc:41
#
#   0x0000038e3338d572 <+98>:    49 8b 74 24 20    mov    0x20(%r12),%rsi
#   0x0000038e3338d577 <+103>:    48 89 ef    mov    %rbp,%rdi
#   0x0000038e3338d57a <+106>:    e8 f1 07 fe ff    callq  0x38e3336dd70
<strcmp@plt>
#   0x0000038e3338d57f <+111>:    85 c0    test   %eax,%eax

As this is frame #10 (and not frame #0) the address 0x0000038e3338d57f just
points to the return address to the caller.  That's correct, it probably
crashed somewhere in 'strcmp' which will return here.

# Is there any way how to unhide these functions?
# #0  0x000003785c2cfff9 in ?? ()
# #1  0x000003785c2e68da in ?? ()

What is the output of 'info sharedlibrary' and what is really mapped to these
addresses according to 'info proc mappings' (or 'cat /proc/PID/maps')?

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