GNU gdb 6.3.50-20050815 (Apple version gdb-960) (Sun May 18 18:38:33 UTC 2008)
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This GDB was configured as "i386-apple-darwin"...Reading symbols for shared libraries .... done

(gdb) run
Starting program: /Users/dirkjan/Documents/projects/rubinius/vm/test/runner 
Reading symbols for shared libraries +++. done
Running 450 tests..............................................................
Program received signal SIGUSR1, User defined signal 1.
0x94a52b9e in __kill ()
(gdb) continue
Continuing.
............................................................................................................................................
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000014
llvm::BasicBlock::back () at ADT/ilist:306
306	  bool empty() const { return Head == 0 || Head == getTail(); }
(gdb) bt
#0  llvm::BasicBlock::back () at ADT/ilist:306
#1  llvm::BasicBlock::back () at ADT/ilist:306
#2  rubinius::VMLLVMMethod::compile (this=0x844b960) at llvm.cpp:335
#3  0x00025c38 in rubinius::VMLLVMMethod::execute (this=0x844b960, state=0x0, task=0x0, msg=@0x0) at llvm.cpp:335
#4  0x00008f79 in rubinius::Executable::execute (this=0x171fbdc, state=0x1807c00, task=0x0, msg=@0x0) at llvm.cpp:335
#5  0x0001d140 in rubinius::Task::execute_stream (this=0x171f938, stream=) at llvm.cpp:335
#6  0x000fbb66 in TestInstructions::test_send_method (this=0xc6d628) at llvm.cpp:335
#7  0x00057840 in CxxTest::RealTestDescription::run (this=0xc6d284) at llvm.cpp:335
#8  0x00061578 in CxxTest::TestRunner::runWorld (this=0xbffff30f) at llvm.cpp:335
#9  0x00057a55 in llvm::BasicBlock::back () at ADT/ilist:23
#10 0x00057a55 in llvm::BasicBlock::back () at ADT/ilist:23
#11 0x00057a55 in main () at llvm.cpp:335
(gdb)