In C++, the --exceptions option enables the use
of throw and try/catch, causes function exception specifications
to be respected, and causes the compiler to emit unwinding tables
to support exception propagation at runtime.
In C++, when the --no_exceptions option is specified,
throw and try/catch are not permitted in source code. However, function
exception specifications are still parsed, but most of their meaning
is ignored.
In C, the behavior of code compiled with --no_exceptions is
undefined if an exception is thrown through the compiled functions.
You must use --exceptions, if you want exceptions to
propagate correctly though C functions.
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