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How GCC handle exceptions under Linux?


Linux standard has no exceptions handling as is in Windows.
In assembly files generated by GCC are references to functions:
_cxa_allocate_exception, __cxa_throw, __cxa_begin_catch and __cxa_end_catch.
It not Linux bot GCC standard?
Bot are hardware exceptions like dividing by zero or reference to denied
memory. It must cooperate with system? Exceptions use Linux signals? Where I
can find detailed description of GCC exceptions algorithm ?




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