euler:rbx-cpp brian$ gdb ./vm/test/runner 
GNU gdb 6.3.50-20050815 (Apple version gdb-768) (Tue Oct  2 04:07:49 UTC 2007)
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This GDB was configured as "i386-apple-darwin"...Reading symbols for shared libraries .... done

(gdb) br test_dir.hpp:30
Breakpoint 1 at 0xa2f95: file test_dir.hpp, line 30.
(gdb) ru
Starting program: /Users/brian/devel/rbx-cpp/vm/test/runner 
Reading symbols for shared libraries +++. done
Running 464 tests......................................................
In TestChannel::test_receive_causes_event_block:
./vm/test/test_channel.hpp:95: Error: Expected (chan->waiting->locate(state, 0) == state->globals.current_thread.get()), found ({ 0E 00 00 00  } != { F0 F8 91 05  })
.......
Breakpoint 1, TestDir::test_open (this=0xc9db9c) at test_dir.hpp:30
30          String* path = String::create(state, ".");
(gdb) The program is running.  Exit anyway? (y or n) y