[Bug boehm-gc/52179] boehm-gc incompatible with aslr on darwin11

["howarth at nitro dot med.uc.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52179

--- Comment #4 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-02-09 00:46:21 UTC ---
Backtrace for thread_leak_test at -m64....


# gdb ./thread_leak_testGNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Thu
Nov  3 21:59:02 UTC 2011)Copyright 2004 Free Software Foundation, Inc.GDB is
free software, covered by the GNU General Public License, and you arewelcome to
change it and/or distribute copies of it under certain conditions.
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) set disable-aslr off
(gdb) r
Starting program:
/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/boehm-gc/testsuite/.libs/thread_leak_test 
Reading symbols for shared libraries + done
Reading symbols for shared libraries ++++........................ done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x00007fff650f1368
GC_mark_from (mark_stack_top=0x105522000, mark_stack=0x105522000,
mark_stack_limit=0x105532000) at ../../../gcc-4.7-20120207/boehm-gc/mark.c:759
759          deferred = *limit;
(gdb) bt
#0  GC_mark_from (mark_stack_top=0x105522000, mark_stack=0x105522000,
mark_stack_limit=0x105532000) at ../../../gcc-4.7-20120207/boehm-gc/mark.c:759
#1  0x000000010547c947 in GC_mark_some (cold_gc_frame=0x7fff6506c5dc "\001") at
../../../gcc-4.7-20120207/boehm-gc/mark.c:361
#2  0x00000001054746ae in GC_stopped_mark (stop_func=0x105473b88
<GC_never_stop_func>) at ../../../gcc-4.7-20120207/boehm-gc/alloc.c:531
#3  0x000000010547426a in GC_try_to_collect_inner (stop_func=0x105473b88
<GC_never_stop_func>) at ../../../gcc-4.7-20120207/boehm-gc/alloc.c:378
#4  0x0000000105480222 in GC_init_inner () at
../../../gcc-4.7-20120207/boehm-gc/misc.c:789
#5  0x000000010547adda in GC_generic_malloc_inner (lb=144, k=1) at
../../../gcc-4.7-20120207/boehm-gc/malloc.c:123
#6  0x0000000105486d39 in GC_pthread_create (new_thread=0x7fff6506c740,
attr=0x0, start_routine=0x10546dd18 <test>, arg=0x0) at
../../../gcc-4.7-20120207/boehm-gc/pthread_support.c:1330
#7  0x000000010546ddd6 in main () at
/sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120207/boehm-gc/testsuite/boehm-gc.c/thread_leak_test.c:28
(gdb)