使用LLVM构建和任何优化都会导致应用程序在启动时崩溃

When I try to build my app with LLVM 2.0 in XCode 4.0.1 and any level or optimization that is not none (anything but -O0), the app crashes after i launch it on the device (simulator is ok). I can't seem to debug the crash as it does not happen when i build in xcode and attach via GDB/LLDB. Also, the crash only happens when i build the app on the command line with xcodebuild; building via the XCode IDE doesn't crash even with the exact same project settings. I can't see any useful information in the crash logs, as the crash happens outside my code:When I try to build my app with LLVM 2.0 in XCo