http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47558
--- Comment #8 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-02-01
06:10:32 UTC ---
Actually a backtrace confirms that current gcc trunk is broken and the missing
linkage on /usr/lib/libgcc_s.1.dylib is causing the wrong unwinder to be
used...
howarth% ../bin/xplor -debug gdb
GNU gdb 6.3.50-20050815 (Apple version gdb-1510) (Wed Sep 22 02:45:02 UTC 2010)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared
libraries ............... done
(gdb) r < dipCoup.inp
Starting program: /Users/howarth/xplor-nih-2.27/bin.Darwin_10_x86_64/xplor <
dipCoup.inp
Reading symbols for shared libraries .++++++++++++++....... done
Xplor-NIH version 2.27-custom
...
-------------------------------------------------------------------------------
-- POWELL ------ step= 5 --- stepsize= 0.020455 --- energy evals= 2
--
| Etotal =181.583 grad(E)=4.894 E(BOND)=6.068 E(ANGL)=160.218
|
| E(IMPR)=5.596 E(XDIP)=9.701
|
-------------------------------------------------------------------------------
Powell::step: irregular exit: Line search abandoned: gradient may be incorrect
Program received signal SIGABRT, Aborted.
0x00007fff87c05616 in __kill ()
(gdb) bt
#0 0x00007fff87c05616 in __kill ()
#1 0x00007fff87ca5cca in abort ()
#2 0x00000001020b37a6 in uw_init_context_1 (context=0x7fff5fbfc4b0,
outer_cfa=0x7fff5fbfc6e0, outer_ra=0x10190eb12) at
../../../gcc/libgcc/../gcc/unwind-dw2.c:1265
#3 0x00007fff5fbfc920 in ?? ()
#4 0x00007fff87c070a2 in __sflush ()
(gdb)
If we were properly executing in the system unwinder, which lacks debug code,
we wouldn't end up with a backtrace through
../../../gcc/libgcc/../gcc/unwind-dw2.c:1265 in the FSF gcc sources.
