std::longjmp
From cppreference.com
| Defined in header <csetjmp>
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| void longjmp( std::jmp_buf env, int status ); |
(until C++17) | |
| [[noreturn]] void longjmp( std::jmp_buf env, int status ); |
(since C++17) | |
Loads the execution context env saved by a previous call to setjmp. This function does not return. Control is transferred to the call site of the macro setjmp that set up env. That setjmp then returns the value, passed as the status.
If the function that called setjmp has exited, the behavior is undefined (in other words, only long jumps up the call stack are allowed).
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[edit] Extra restrictions in C++
On top of C longjmp, C++ std::longjmp has more restricted behavior.
If replacing std::longjmp with throw and setjmp with catch would invoke a