[expr.throw] (original) (raw)

7 Expressions [expr]

7.6 Compound expressions [expr.compound]

7.6.18 Throwing an exception [expr.throw]

A throw-expression is of type void.

The array-to-pointer ([conv.array]) and function-to-pointer ([conv.func]) standard conversions are performed on the operand.

The type of the exception object is determined by removing any top-level cv-qualifiers from the type of the (possibly converted) operand.

The exception object is copy-initialized ([dcl.init.general]) from the (possibly converted) operand.

Athrow-expressionwith no operand rethrows the currently handled exception ([except.handle]).

If no exception is presently being handled, the function std​::​terminate is invoked ([except.terminate]).

Otherwise, the exception is reactivated with the existing exception object; no new exception object is created.

The exception is no longer considered to be caught.

[Example 1:

An exception handler that cannot completely handle the exception itself can be written like this:try { } catch (...) { throw; }

— _end example_]