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signal mask since a 1.3 binary may attempt to invoke sigreturn(2) directly for an alternate exit from the signal handler. If we don't do this, it will get a garbage signal mask if it tries to do that.
signal mask since a 1.3 binary may attempt to invoke sigreturn(2) directly for an alternate exit from the signal handler. If we don't do this, it will get a garbage signal mask if it tries to do that.