az: catch(…) catches SEH exceptions in VC because VC C++ exceptions are modeled ontop of SEH exceptions (thus the userkernel roundtrips in some windows versions).
GCC code won’t catch SEH exceptions with catch(…), which also means you need SetUnhandledExceptionFilter (or local SEH try/catch blocks, dunno if GCC supports that?) if you want to catch hardware exceptions or other SEH exceptions from the few API calls that can raise them.