Occurs that error is communicated through mechanism other than exceptions (GetLastError, HRESULT).Ĭ++ exception handling doesn't just catch errors thrown, it catches all kinds of errors. Since the Windows API doesn't use C++ exceptions to communicate errors there aren't any "runtime errors" to catch when you are calling a WinAPI function. So how exactly are you going to handle an exception forĪt least an application would be able to exit regularly without crashing and triggering system error popup dialogĬ++ exception handling is intended to catch C++ exceptions, those thrown using 'throw'. Is the pointer 'bad' because it contains the wrong value or because the memory it points to has been freed? No idea. ![]() Related information See the fatal exception definition for further information and related links. Partly because this prevents some compiler optimizations, partly because in general it's simply a bad idea to catch asynchronous (structured) exceptions. Let's say you are catching an access violation exception, such an exception happens when an Caused when code executing at ring privilege 3 attempts to access a word operand thats not divisible by four, or a long real or temp real whose address is not divisible by eight.
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