答案似乎是升级至Android 4.3。我的手机今天收到的更新（定制版HTC推出了以开发者版本的设备），并转储到系统日志中回溯现在露出了完整的堆栈。然而，正如@ user1034749建议，让用GDB交手是有许多额外的好处一个很好的选择。

The answer appears to be to upgrade to Android 4.3. My phone received an update today (the custom HTC version rolled out to developer edition devices) and the backtraces dumped to the system log now reveal a full stack. However, as @user1034749 suggests, getting to grips with GDB is a good alternative with many additional benefits.