(7.7.1.1) If the equivalent of signal(sig, SIG_DFL); is not executed prior to the call of a signal handler, the blocking of the signal that is performed: (Sun Studio 12: C User's Guide)

Sun Studio 12: C User's Guide

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(7.7.1.1) If the equivalent of `signal(sig, SIG_DFL);` is not executed prior to the call of a signal handler, the blocking of the signal that is performed:

The equivalent of signal(sig,SIG_DFL) is always executed.

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