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      SIG_ERR

      From cppreference.com
      <cpp‎ |utility‎ |program
       
       
      Utilities library
       
       
      Defined in header<csignal>
      #define SIG_ERR /* implementation defined */

      A value of typevoid(*)(int). When returned bystd::signal, indicates that an error has occurred.

      [edit]See also

      sets a signal handler for particular signal
      (function)[edit]
      C documentation forSIG_ERR
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/utility/program/SIG_ERR&oldid=161812"

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