SIG_ERR
From cppreference.com
C++
Utilities library
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Program support utilities
Program termination | |||||||||||||||||||||
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Unreachable control flow | |||||||||||||||||||||
(C++23)
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Communicating with the environment | |||||||||||||||||||||
Signals | |||||||||||||||||||||
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Signal types | |||||||||||||||||||||
Non-local jumps | |||||||||||||||||||||
Types | |||||||||||||||||||||
Defined in header
<csignal>
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#define SIG_ERR /* implementation defined */
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A value of type void ( * ) ( int ) . When returned by std::signal , indicates that an error has occurred.
See also
sets a signal handler for particular signal
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C documentation
for
SIG_ERR
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