std::basic_stacktrace<Allocator>::rend, std::basic_stacktrace<Allocator>::crend
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< cpp | utility | basic stacktrace
const_reverse_iterator rend() constnoexcept; | (1) | (since C++23) |
const_reverse_iterator crend()constnoexcept; | (2) | (since C++23) |
Returns a reverse iterator pointing past the last entry of the reversed basic_stacktrace. It corresponds to the iterator preceding the first entry of the original basic_stacktrace. This iterator acts as a placeholder, attempting to dereference it results in undefined behavior.
Contents |
[edit]Parameters
(none)
[edit]Return value
The end iterator of the reversed basic_stacktrace.
[edit]Complexity
Constant.
[edit]Example
Run this code
#include <algorithm>#include <iostream>#include <stacktrace> int main(){auto trace = std::stacktrace::current();auto empty_trace =std::stacktrace{}; // Print stacktrace.std::for_each(trace.rbegin(), trace.rend(), [](constauto& f){std::cout<< f <<'\n';}); if(empty_trace.rbegin()== empty_trace.rend())std::cout<<"stacktrace 'empty_trace' is indeed empty.\n";}
Possible output:
0x0000000000402A29 in ./prog.exe __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6 0x0000000000402BA5 in ./prog.exe stacktrace 'empty_trace' is indeed empty.
[edit]See also
| returns a reverse iterator to the beginning (public member function) |
