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A callback for assert errors in D. The user-supplied assert handler will
be called if one has been supplied, otherwise an
AssertError will be
extern(C) void onAssertError (
string file = __FILE__,
ulong line = cast(ulong)__LINE__
|file||The name of the file that signaled this error.|
|line||The line number on which this error occurred.|
Sean Kelly and Jonathan M Davis