Signal Handling--ref

If the signal causes a handler function to be executed,thenpausereturns. This is considered an unsuccessful return (since "successful" behavior would be to suspend the program forever),so the return value is-1. Even if you specify that other primitives should resume when a system handler returns (see section),this has no effect onpause; it always fails when a signal is handled.

The followingerrnoerror conditions are defined for this function:

EINTR

The function was interrupted by delivery of a signal.

If the signal causes program termination,pausedoesn't return (obviously).

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